diff --git a/application/Espo/Core/Templates/Entities/CategoryTree.php b/application/Espo/Core/Templates/Entities/CategoryTree.php
index 1bb3a29b1d..9053a9241b 100644
--- a/application/Espo/Core/Templates/Entities/CategoryTree.php
+++ b/application/Espo/Core/Templates/Entities/CategoryTree.php
@@ -32,4 +32,6 @@ namespace Espo\Core\Templates\Entities;
 use Espo\Core\Entities\CategoryTreeItem;
 
 class CategoryTree extends CategoryTreeItem
-{}
+{
+    public const string TEMPLATE_TYPE = 'CategoryTree';
+}
diff --git a/application/Espo/Core/Templates/Metadata/CategoryTree/clientDefs.json b/application/Espo/Core/Templates/Metadata/CategoryTree/clientDefs.json
index 7affbef26c..f01f13ff64 100644
--- a/application/Espo/Core/Templates/Metadata/CategoryTree/clientDefs.json
+++ b/application/Espo/Core/Templates/Metadata/CategoryTree/clientDefs.json
@@ -9,6 +9,13 @@
                     "link": "#{entityType}/list",
                     "acl": "read",
                     "style": "default"
+                },
+                {
+                    "labelTranslation": "Global.scopeNamesPlural.{subjectEntityType}",
+                    "link": "#{subjectEntityType}",
+                    "acl": "read",
+                    "style": "default",
+                    "aclScope": "{subjectEntityType}"
                 }
             ]
         },
@@ -19,6 +26,13 @@
                     "link": "#{entityType}",
                     "acl": "read",
                     "style": "default"
+                },
+                {
+                    "labelTranslation": "Global.scopeNamesPlural.{subjectEntityType}",
+                    "link": "#{subjectEntityType}",
+                    "acl": "read",
+                    "style": "default",
+                    "aclScope": "{subjectEntityType}"
                 }
             ]
         }
@@ -29,4 +43,4 @@
             "unlinkDisabled": true
         }
     }
-}
\ No newline at end of file
+}
diff --git a/application/Espo/Core/Templates/Metadata/CategoryTree/scopes.json b/application/Espo/Core/Templates/Metadata/CategoryTree/scopes.json
index 78db1a0b32..0b6d3b26c5 100644
--- a/application/Espo/Core/Templates/Metadata/CategoryTree/scopes.json
+++ b/application/Espo/Core/Templates/Metadata/CategoryTree/scopes.json
@@ -1,10 +1,26 @@
 {
     "entity": true,
-    "layouts": true,
-    "tab": true,
+    "tab": false,
     "acl": true,
     "aclPortal": true,
-    "customizable": true,
+    "aclLevelList": [
+        "all",
+        "team",
+        "no"
+    ],
+    "aclPortalLevelList": [
+        "all",
+        "no"
+    ],
     "importable": false,
-    "notifications": false
-}
\ No newline at end of file
+    "notifications": false,
+    "customizable": false,
+    "entityManager": {
+        "fields": false,
+        "formula": false,
+        "relationships": false,
+        "addField": false,
+        "edit": false,
+        "layouts": false
+    }
+}
diff --git a/application/Espo/Core/Templates/i18n/en_US/CategoryTree.json b/application/Espo/Core/Templates/i18n/en_US/CategoryTree.json
new file mode 100644
index 0000000000..81eede104f
--- /dev/null
+++ b/application/Espo/Core/Templates/i18n/en_US/CategoryTree.json
@@ -0,0 +1,5 @@
+{
+    "labels": {
+        "Create {entityType}": "Create {entityTypeTranslated}"
+    }
+}
diff --git a/application/Espo/Resources/i18n/en_US/EntityManager.json b/application/Espo/Resources/i18n/en_US/EntityManager.json
index 5b98e7fe77..79c3a50177 100644
--- a/application/Espo/Resources/i18n/en_US/EntityManager.json
+++ b/application/Espo/Resources/i18n/en_US/EntityManager.json
@@ -55,7 +55,8 @@
         "assignedUsers": "Multiple Assigned Users",
         "collaborators": "Collaborators",
         "aclContactLink": "ACL Contact Link",
-        "aclAccountLink": "ACL Account Link"
+        "aclAccountLink": "ACL Account Link",
+        "categories": "Categories"
     },
     "options": {
         "type": {
@@ -98,6 +99,7 @@
         "beforeSaveApiScript": "A script called on create and update API requests before an entity is saved. Use for custom validation and duplicate checking."
     },
     "tooltips": {
+        "categories": "Enable the category tree feature. Records can be placed into categories.",
         "aclContactLink": "The link with Contact to use when applying access control for portal users.",
         "aclAccountLink": "The link with Account to use when applying access control for portal users.",
         "collaborators": "The ability to share records with specific users.",
@@ -118,5 +120,11 @@
         "countDisabled": "Total number won't be displayed on the list view. Can decrease loading time when the DB table is big.",
         "fullTextSearch": "Running rebuild is required.",
         "linkParamReadOnly": "A read-only link cannot be edited via the *link* and *unlink* API requests. It won't be possible to relate and unrelate records via the relationship panel. It still possible to edit read-only links via link and link-multiple fields."
+    },
+    "entityNameParts": {
+        "Category": "Category"
+    },
+    "entityNamePartsPlural": {
+        "Category": "Categories"
     }
 }
diff --git a/application/Espo/Resources/i18n/en_US/Global.json b/application/Espo/Resources/i18n/en_US/Global.json
index 39d2ca83df..7e2798532c 100644
--- a/application/Espo/Resources/i18n/en_US/Global.json
+++ b/application/Espo/Resources/i18n/en_US/Global.json
@@ -521,7 +521,8 @@
         "names": "Names",
         "types": "Types",
         "targetListIsOptedOut": "Is Opted Out (Target List)",
-        "childList": "Child List"
+        "childList": "Child List",
+        "category": "Category"
     },
     "links": {
         "assignedUser": "Assigned User",
diff --git a/application/Espo/Resources/metadata/app/entityManager.json b/application/Espo/Resources/metadata/app/entityManager.json
index 212cacc3c4..b47316b6b2 100644
--- a/application/Espo/Resources/metadata/app/entityManager.json
+++ b/application/Espo/Resources/metadata/app/entityManager.json
@@ -6,11 +6,13 @@
     "deleteHookClassNameList": [
         "Espo\\Tools\\EntityManager\\Hook\\Hooks\\PlusDeleteHook",
         "Espo\\Tools\\EntityManager\\Hook\\Hooks\\EventDeleteHook",
-        "Espo\\Tools\\EntityManager\\Hook\\Hooks\\DeleteHasChildrenLinks"
+        "Espo\\Tools\\EntityManager\\Hook\\Hooks\\DeleteHasChildrenLinks",
+        "Espo\\Tools\\EntityManager\\Hook\\Hooks\\CategoriesDeleteHook"
     ],
     "updateHookClassNameList": [
         "Espo\\Tools\\EntityManager\\Hook\\Hooks\\AssignedUsersUpdateHook",
         "Espo\\Tools\\EntityManager\\Hook\\Hooks\\CollaboratorsUpdateHook",
-        "Espo\\Tools\\EntityManager\\Hook\\Hooks\\StreamUpdateHook"
+        "Espo\\Tools\\EntityManager\\Hook\\Hooks\\StreamUpdateHook",
+        "Espo\\Tools\\EntityManager\\Hook\\Hooks\\CategoriesUpdateHook"
     ]
 }
diff --git a/application/Espo/Resources/metadata/app/entityManagerParams.json b/application/Espo/Resources/metadata/app/entityManagerParams.json
index 0dda3bcc38..486f114f56 100644
--- a/application/Espo/Resources/metadata/app/entityManagerParams.json
+++ b/application/Espo/Resources/metadata/app/entityManagerParams.json
@@ -167,6 +167,13 @@
                 "tooltip": true,
                 "view": "views/admin/entity-manager/fields/acl-account-link"
             }
+        },
+        "categories": {
+            "location": "scopes",
+            "fieldDefs": {
+                "type": "bool",
+                "tooltip": true
+            }
         }
     },
     "@BasePlus": {
@@ -216,6 +223,13 @@
                 "tooltip": true,
                 "view": "views/admin/entity-manager/fields/acl-account-link"
             }
+        },
+        "categories": {
+            "location": "scopes",
+            "fieldDefs": {
+                "type": "bool",
+                "tooltip": true
+            }
         }
     }
 }
diff --git a/application/Espo/Resources/metadata/app/entityTemplateList.json b/application/Espo/Resources/metadata/app/entityTemplateList.json
index 44a776bcac..0f01a3da0c 100644
--- a/application/Espo/Resources/metadata/app/entityTemplateList.json
+++ b/application/Espo/Resources/metadata/app/entityTemplateList.json
@@ -1,7 +1,8 @@
 [
-   "Base",
-   "BasePlus",
-   "Event",
-   "Person",
-   "Company"
-]
\ No newline at end of file
+    "Base",
+    "BasePlus",
+    "Event",
+    "Person",
+    "Company",
+    "CategoryTree"
+]
diff --git a/application/Espo/Resources/metadata/app/entityTemplates.json b/application/Espo/Resources/metadata/app/entityTemplates.json
index a7990d4e3b..17a14b44d0 100644
--- a/application/Espo/Resources/metadata/app/entityTemplates.json
+++ b/application/Espo/Resources/metadata/app/entityTemplates.json
@@ -18,5 +18,10 @@
     "Person": {
         "entityClassName": "Espo\\Core\\Templates\\Entities\\Person",
         "repositoryClassName": "Espo\\Core\\Templates\\Repositories\\Person"
+    },
+    "CategoryTree": {
+        "entityClassName": "Espo\\Core\\Templates\\Entities\\CategoryTree",
+        "repositoryClassName": "Espo\\Core\\Templates\\Repositories\\CategoryTree",
+        "isNotCreatable": true
     }
 }
diff --git a/application/Espo/Tools/EntityManager/CreateParams.php b/application/Espo/Tools/EntityManager/CreateParams.php
index 9d5a8e0fd4..5796e15dc6 100644
--- a/application/Espo/Tools/EntityManager/CreateParams.php
+++ b/application/Espo/Tools/EntityManager/CreateParams.php
@@ -29,26 +29,16 @@
 
 namespace Espo\Tools\EntityManager;
 
-class CreateParams
+readonly class CreateParams
 {
     /**
      * @param array<string, string> $replaceData
      */
     public function __construct(
-        private bool $forceCreate = false,
-        private array $replaceData = []
+        public bool $forceCreate = false,
+        public array $replaceData = [],
+        public bool $skipCustomPrefix = false,
+        public bool $isNotRemovable = false,
+        public bool $addTab = true,
     ) {}
-
-    public function forceCreate(): bool
-    {
-        return $this->forceCreate;
-    }
-
-    /**
-     * @return array<string, string>
-     */
-    public function getReplaceData(): array
-    {
-        return $this->replaceData;
-    }
 }
diff --git a/application/Espo/Tools/EntityManager/EntityManager.php b/application/Espo/Tools/EntityManager/EntityManager.php
index 61b3be0362..14801755ad 100644
--- a/application/Espo/Tools/EntityManager/EntityManager.php
+++ b/application/Espo/Tools/EntityManager/EntityManager.php
@@ -103,11 +103,13 @@ class EntityManager
         /** @var array<string, mixed> $templateDefs */
         $templateDefs = $this->metadata->get(['app', 'entityTemplates', $type], []);
 
-        if (!empty($templateDefs['isNotCreatable']) && !$createParams->forceCreate()) {
+        if (!empty($templateDefs['isNotCreatable']) && !$createParams->forceCreate) {
             throw new Error("Type '$type' is not creatable.");
         }
 
-        $name = $this->nameUtil->addCustomPrefix($name, true);
+        if (!$createParams->skipCustomPrefix) {
+            $name = $this->nameUtil->addCustomPrefix($name, true);
+        }
 
         if ($this->nameUtil->nameIsBad($name)) {
             throw new Error("Entity name should contain only letters and numbers, " .
@@ -206,7 +208,7 @@ class EntityManager
             }
 
             $languageContents = $this->fileManager->getContents($filePath);
-            $languageContents = $this->replace($languageContents, $name, $createParams->getReplaceData());
+            $languageContents = $this->replace($languageContents, $name, $createParams->replaceData);
             $languageContents = str_replace('{entityTypeTranslated}', $labelSingular, $languageContents);
 
             $destinationFilePath = 'custom/Espo/Custom/Resources/i18n/' . $language . '/' . $name . '.json';
@@ -217,7 +219,7 @@ class EntityManager
         $filePath = $templatePath . "/Metadata/$type/scopes.json";
 
         $scopesDataContents = $this->fileManager->getContents($filePath);
-        $scopesDataContents = $this->replace($scopesDataContents, $name, $createParams->getReplaceData());
+        $scopesDataContents = $this->replace($scopesDataContents, $name, $createParams->replaceData);
 
         $scopesData = Json::decode($scopesDataContents, true);
 
@@ -228,7 +230,7 @@ class EntityManager
         $scopesData['object'] = true;
         $scopesData['isCustom'] = true;
 
-        if (!empty($templateDefs['isNotRemovable']) || !empty($params['isNotRemovable'])) {
+        if ($createParams->isNotRemovable) {
             $scopesData['isNotRemovable'] = true;
         }
 
@@ -241,7 +243,7 @@ class EntityManager
         $filePath = $templatePath . "/Metadata/$type/entityDefs.json";
 
         $entityDefsDataContents = $this->fileManager->getContents($filePath);
-        $entityDefsDataContents = $this->replace($entityDefsDataContents, $name, $createParams->getReplaceData());
+        $entityDefsDataContents = $this->replace($entityDefsDataContents, $name, $createParams->replaceData);
 
         $entityDefsData = Json::decode($entityDefsDataContents, true);
 
@@ -250,7 +252,7 @@ class EntityManager
         $filePath = $templatePath . "/Metadata/$type/clientDefs.json";
 
         $clientDefsContents = $this->fileManager->getContents($filePath);
-        $clientDefsContents = $this->replace($clientDefsContents, $name, $createParams->getReplaceData());
+        $clientDefsContents = $this->replace($clientDefsContents, $name, $createParams->replaceData);
 
         $clientDefsData = Json::decode($clientDefsContents, true);
 
@@ -287,13 +289,15 @@ class EntityManager
 
         $this->processCreateHook($entityTypeParams);
 
-        $tabList = $this->config->get('tabList', []);
+        if ($createParams->addTab) {
+            $tabList = $this->config->get('tabList', []);
 
-        if (!in_array($name, $tabList)) {
-            $tabList[] = $name;
+            if (!in_array($name, $tabList)) {
+                $tabList[] = $name;
 
-            $this->configWriter->set('tabList', $tabList);
-            $this->configWriter->save();
+                $this->configWriter->set('tabList', $tabList);
+                $this->configWriter->save();
+            }
         }
 
         $this->dataManager->rebuild();
@@ -522,7 +526,7 @@ class EntityManager
             throw new Forbidden;
         }
 
-        if (!$this->isScopeCustomizable($name)) {
+        if (!$this->isScopeCustomizable($name) && !$deleteParams->forceRemove()) {
             throw new Error("Entity type $name is not customizable.");
         }
 
diff --git a/application/Espo/Tools/EntityManager/Hook/Hooks/CategoriesDeleteHook.php b/application/Espo/Tools/EntityManager/Hook/Hooks/CategoriesDeleteHook.php
new file mode 100644
index 0000000000..c8dd2e7191
--- /dev/null
+++ b/application/Espo/Tools/EntityManager/Hook/Hooks/CategoriesDeleteHook.php
@@ -0,0 +1,66 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2026 EspoCRM, Inc.
+ * Website: https://www.espocrm.com
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
+ * The interactive user interfaces in modified source and object code versions
+ * of this program must display Appropriate Legal Notices, as required under
+ * Section 5 of the GNU Affero General Public License version 3.
+ *
+ * In accordance with Section 7(b) of the GNU Affero General Public License version 3,
+ * these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
+ ************************************************************************/
+
+namespace Espo\Tools\EntityManager\Hook\Hooks;
+
+use Espo\Core\Exceptions\Error;
+use Espo\Core\Exceptions\Forbidden;
+use Espo\Core\Templates\Entities\Base;
+use Espo\Core\Templates\Entities\BasePlus;
+use Espo\Tools\EntityManager\Hook\DeleteHook;
+use Espo\Tools\EntityManager\Params;
+
+/**
+ * @noinspection PhpUnused
+ */
+class CategoriesDeleteHook implements DeleteHook
+{
+    private const string PARAM = 'categories';
+
+    public function __construct(
+        private CategoriesUpdateHook $categoriesUpdateHook,
+    ) {}
+
+    /**
+     * @throws Forbidden
+     * @throws Error
+     */
+    public function process(Params $params): void
+    {
+        if (!in_array($params->getType(), [BasePlus::TEMPLATE_TYPE, Base::TEMPLATE_TYPE])) {
+            return;
+        }
+
+        if (!$params->get(self::PARAM)) {
+            return;
+        }
+
+        $this->categoriesUpdateHook->remove($params->getName());
+    }
+}
diff --git a/application/Espo/Tools/EntityManager/Hook/Hooks/CategoriesUpdateHook.php b/application/Espo/Tools/EntityManager/Hook/Hooks/CategoriesUpdateHook.php
new file mode 100644
index 0000000000..f6702466be
--- /dev/null
+++ b/application/Espo/Tools/EntityManager/Hook/Hooks/CategoriesUpdateHook.php
@@ -0,0 +1,203 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2026 EspoCRM, Inc.
+ * Website: https://www.espocrm.com
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
+ * The interactive user interfaces in modified source and object code versions
+ * of this program must display Appropriate Legal Notices, as required under
+ * Section 5 of the GNU Affero General Public License version 3.
+ *
+ * In accordance with Section 7(b) of the GNU Affero General Public License version 3,
+ * these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
+ ************************************************************************/
+
+namespace Espo\Tools\EntityManager\Hook\Hooks;
+
+use Espo\Core\DataManager;
+use Espo\Core\Exceptions\BadRequest;
+use Espo\Core\Exceptions\Conflict;
+use Espo\Core\Exceptions\Error;
+use Espo\Core\Exceptions\Forbidden;
+use Espo\Core\InjectableFactory;
+use Espo\Core\ORM\Type\FieldType;
+use Espo\Core\Templates\Entities\Base;
+use Espo\Core\Templates\Entities\BasePlus;
+use Espo\Core\Templates\Entities\CategoryTree;
+use Espo\Core\Utils\Language;
+use Espo\Core\Utils\Log;
+use Espo\Core\Utils\Metadata;
+use Espo\ORM\Defs\Params\FieldParam;
+use Espo\ORM\Defs\Params\RelationParam;
+use Espo\ORM\Type\RelationType;
+use Espo\Tools\EntityManager\CreateParams;
+use Espo\Tools\EntityManager\DeleteParams;
+use Espo\Tools\EntityManager\EntityManager;
+use Espo\Tools\EntityManager\Hook\UpdateHook;
+use Espo\Tools\EntityManager\Params;
+use Espo\Tools\LayoutManager\LayoutCustomizer;
+use Espo\Tools\LayoutManager\LayoutName;
+
+/**
+ * @noinspection PhpUnused
+ */
+class CategoriesUpdateHook implements UpdateHook
+{
+    private const string PARAM = 'categories';
+    private const string FIELD = 'category';
+
+    public function __construct(
+        private InjectableFactory $injectableFactory,
+        private Language $defaultLanguage,
+        private Metadata $metadata,
+        private DataManager $dataManager,
+        private LayoutCustomizer $layoutCustomizer,
+        private Log $log,
+    ) {}
+
+    /**
+     * @throws BadRequest
+     * @throws Forbidden
+     * @throws Error
+     * @throws Conflict
+     */
+    public function process(Params $params, Params $previousParams): void
+    {
+        if (!in_array($params->getType(), [BasePlus::TEMPLATE_TYPE, Base::TEMPLATE_TYPE])) {
+            return;
+        }
+
+        if ($params->get(self::PARAM) && !$previousParams->get(self::PARAM)) {
+            $this->add($params->getName());
+        } else if (!$params->get(self::PARAM) && $previousParams->get(self::PARAM)) {
+            $this->remove($params->getName());
+        }
+    }
+
+    /**
+     * @throws BadRequest
+     * @throws Conflict
+     * @throws Error
+     */
+    private function add(string $name): void
+    {
+        $entityType = $this->composeEntityType($name);
+
+        if ($this->metadata->get("scopes.$entityType")) {
+            $message = "Could not create category entity type $entityType as the same entity type exists";
+
+            $this->log->warning($message);
+
+            return;
+        }
+
+        $createParams = new CreateParams(
+            forceCreate: true,
+            replaceData: [
+                'subjectEntityType' => $name,
+            ],
+            skipCustomPrefix: true,
+            isNotRemovable: true,
+            addTab: false,
+        );
+
+        $this->getEntityManagerTool()->create(
+            name: $entityType,
+            type: CategoryTree::TEMPLATE_TYPE,
+            params: [
+                'labelSingular' => $this->defaultLanguage->translateLabel($name, 'scopeNames') . ' ' .
+                    $this->defaultLanguage->translateLabel('Category', 'entityNameParts', 'EntityManager'),
+                'labelPlural' => $this->defaultLanguage->translateLabel($name, 'scopeNames') . ' ' .
+                    $this->defaultLanguage->translateLabel('Category', 'entityNamePartsPlural', 'EntityManager')
+            ],
+            createParams: $createParams,
+        );
+
+        $this->metadata->set('entityDefs', $name, [
+            'fields' => [
+                self::FIELD => [
+                    FieldParam::TYPE => FieldType::LINK,
+                    'audited' => true,
+                    'view' => 'views/fields/link-category-tree'
+                ]
+            ],
+            'links' => [
+                self::FIELD => [
+                    RelationParam::TYPE => RelationType::BELONGS_TO,
+                    RelationParam::ENTITY => $entityType,
+                ]
+            ],
+        ]);
+
+        $this->metadata->set('clientDefs', $name, [
+            'views' => [
+                'list' => 'views/list-with-categories',
+            ],
+            'modalViews' => [
+                'select' => 'views/modals/select-records-with-categories',
+            ],
+        ]);
+
+        $this->metadata->save();
+        $this->dataManager->rebuild();
+
+        $this->layoutCustomizer->addDetailField($name, self::FIELD, LayoutName::DETAIL);
+        $this->layoutCustomizer->addDetailField($name, self::FIELD, LayoutName::DETAIL_SMALL);
+    }
+
+    /**
+     * @throws Forbidden
+     * @throws Error
+     */
+    public function remove(string $name): void
+    {
+        $entityType = $this->composeEntityType($name);
+
+        $deleteParams = new DeleteParams(
+            forceRemove: true,
+        );
+
+        $this->getEntityManagerTool()->delete($entityType, $deleteParams);
+
+        $this->metadata->delete('entityDefs', $name, [
+            'fields.' . self::FIELD,
+            'links.' . self::FIELD,
+        ]);
+
+        $this->metadata->delete('clientDefs', $name, [
+            'views.list',
+            'modalViews.select',
+        ]);
+
+        $this->metadata->save();
+        $this->dataManager->rebuild();
+
+        $this->layoutCustomizer->removeInDetail($name, self::FIELD, LayoutName::DETAIL);
+        $this->layoutCustomizer->removeInDetail($name, self::FIELD, LayoutName::DETAIL_SMALL);
+    }
+
+    private function getEntityManagerTool(): EntityManager
+    {
+        return $this->injectableFactory->create(EntityManager::class);
+    }
+
+    private function composeEntityType(string $name): string
+    {
+        return $name . 'Category';
+    }
+}
diff --git a/application/Espo/Tools/LayoutManager/LayoutCustomizer.php b/application/Espo/Tools/LayoutManager/LayoutCustomizer.php
new file mode 100644
index 0000000000..4dd098eb19
--- /dev/null
+++ b/application/Espo/Tools/LayoutManager/LayoutCustomizer.php
@@ -0,0 +1,189 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2026 EspoCRM, Inc.
+ * Website: https://www.espocrm.com
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
+ * The interactive user interfaces in modified source and object code versions
+ * of this program must display Appropriate Legal Notices, as required under
+ * Section 5 of the GNU Affero General Public License version 3.
+ *
+ * In accordance with Section 7(b) of the GNU Affero General Public License version 3,
+ * these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
+ ************************************************************************/
+
+namespace Espo\Tools\LayoutManager;
+
+use Espo\Core\Exceptions\Error;
+use Espo\Core\Utils\Json;
+use Espo\Tools\Layout\LayoutProvider;
+use RuntimeException;
+use stdClass;
+
+/**
+ * @since 9.4.0
+ */
+class LayoutCustomizer
+{
+    public function __construct(
+        private LayoutProvider $layoutProvider,
+        private LayoutManager $layoutManager,
+    ) {}
+
+    /**
+     * @throws Error
+     */
+    public function addDetailField(string $entityType, string $field, string $layoutName): void
+    {
+        $layoutData = $this->getDetailLayout($entityType, $layoutName);
+
+        if ($this->hasInDetail($layoutData, $field)) {
+            return;
+        }
+
+        $lastPanel = $layoutData[count($layoutData) - 1];
+
+        if (!$lastPanel instanceof stdClass) {
+            throw new RuntimeException("Bad layout panel definition in $entityType.$layoutName.");
+        }
+
+        if (isset($lastPanel->cols) && is_array($lastPanel->cols)) {
+            $cols = $lastPanel->cols;
+
+            $cols[] = [[(object) ['name' => $field]]];
+
+            $lastPanel->cols = $cols;
+        } else {
+            $rows = $lastPanel->rows ?? [];
+
+            $rows[] = [(object) ['name' => $field], false];
+
+            $lastPanel->rows = $rows;
+        }
+
+        $this->layoutManager->set($layoutData, $entityType, $layoutName);
+        $this->layoutManager->save();
+    }
+
+    /**
+     * @throws Error
+     */
+    public function removeInDetail(string $entityType, string $field, string $layoutName): void
+    {
+        $panels = $this->getDetailLayout($entityType, $layoutName);
+
+        $cell = $this->getCellFromDetail($panels, $field);
+
+        if (!$cell) {
+            return;
+        }
+
+        foreach ($panels as $panelItem) {
+            if (isset($panelItem->cols)) {
+                $rowItems =& $panelItem->cols;
+            } else if (isset($panelItem->rows)) {
+                $rowItems =& $panelItem->rows;
+            } else {
+                continue;
+            }
+
+            if (!is_array($rowItems)) {
+                continue;
+            }
+
+            foreach ($rowItems as &$rowItem) {
+                if (!is_array($rowItem)) {
+                    continue;
+                }
+
+                foreach ($rowItem as $i => $cellItem) {
+                    if (!$cellItem instanceof stdClass) {
+                        continue;
+                    }
+
+                    if (($cellItem->name ?? null) === $field) {
+                        $rowItem[$i] = false;
+                    }
+                }
+            }
+        }
+
+        $this->layoutManager->set($panels, $entityType, $layoutName);
+        $this->layoutManager->save();
+    }
+
+    /**
+     * @param array<int, mixed> $panels
+     */
+    private function hasInDetail(array $panels, string $field): bool
+    {
+        return $this->getCellFromDetail($panels, $field) !== null;
+    }
+
+    /**
+     * @param array<int, mixed> $panels
+     */
+    private function getCellFromDetail(array $panels, string $field): ?stdClass
+    {
+        foreach ($panels as $panelItem) {
+            $rowItems = $panelItem->cols ?? $panelItem->rows ?? null;
+
+            if (!is_array($rowItems)) {
+                continue;
+            }
+
+            foreach ($rowItems as $rowItem) {
+                if (!is_array($rowItem)) {
+                    continue;
+                }
+
+                foreach ($rowItem as $cellItem) {
+                    if (!$cellItem instanceof stdClass) {
+                        continue;
+                    }
+
+                    if (($cellItem->name ?? null) === $field) {
+                        return $cellItem;
+                    }
+                }
+            }
+        }
+
+        return null;
+    }
+
+    /**
+     * @return array<int, mixed>
+     */
+    private function getDetailLayout(string $entityType, string $layoutName): array
+    {
+        $layoutString = $this->layoutProvider->get($entityType, $layoutName);
+
+        if (!$layoutString) {
+            $layoutString = '[]';
+        }
+
+        $layoutData = Json::decode($layoutString);
+
+        if (!is_array($layoutData)) {
+            throw new RuntimeException("Bad layout $entityType.$layoutName.");
+        }
+
+        return $layoutData;
+    }
+}
diff --git a/application/Espo/Tools/LayoutManager/LayoutName.php b/application/Espo/Tools/LayoutManager/LayoutName.php
new file mode 100644
index 0000000000..d425d48610
--- /dev/null
+++ b/application/Espo/Tools/LayoutManager/LayoutName.php
@@ -0,0 +1,39 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2026 EspoCRM, Inc.
+ * Website: https://www.espocrm.com
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
+ * The interactive user interfaces in modified source and object code versions
+ * of this program must display Appropriate Legal Notices, as required under
+ * Section 5 of the GNU Affero General Public License version 3.
+ *
+ * In accordance with Section 7(b) of the GNU Affero General Public License version 3,
+ * these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
+ ************************************************************************/
+
+namespace Espo\Tools\LayoutManager;
+
+/**
+ * @since 9.4.0
+ */
+class LayoutName
+{
+    const string DETAIL = 'detail';
+    const string DETAIL_SMALL = 'detailSmall';
+}
diff --git a/client/src/views/admin/entity-manager/edit.js b/client/src/views/admin/entity-manager/edit.js
index d2f99515f5..1bcb11a004 100644
--- a/client/src/views/admin/entity-manager/edit.js
+++ b/client/src/views/admin/entity-manager/edit.js
@@ -381,12 +381,15 @@ class EntityManagerEditView extends View {
     setupDefs() {
         const scope = this.scope;
 
+        const typeList = (this.getMetadata().get('app.entityTemplateList') || ['Base'])
+            .filter(it => !this.getMetadata().get(`app.entityTemplates.${it}.isNotCreatable`));
+
         const defs = {
             fields: {
                 type: {
                     type: 'enum',
                     required: true,
-                    options: this.getMetadata().get('app.entityTemplateList') || ['Base'],
+                    options: typeList,
                     readOnly: scope !== false,
                     tooltip: true,
                 },