diff --git a/api/src/api_graphql/mutations/user_setting_mutation.py b/api/src/api_graphql/mutations/user_setting_mutation.py
index 1fb012d..bca1a9b 100644
--- a/api/src/api_graphql/mutations/user_setting_mutation.py
+++ b/api/src/api_graphql/mutations/user_setting_mutation.py
@@ -1,7 +1,9 @@
 from api.route import Route
 from api_graphql.abc.mutation_abc import MutationABC
+from api_graphql.field.mutation_field_builder import MutationFieldBuilder
 from api_graphql.input.user_setting_input import UserSettingInput
 from core.logger import APILogger
+from core.string import first_to_lower
 from data.schemas.public.user_setting import UserSetting
 from data.schemas.public.user_setting_dao import userSettingsDao
 from data.schemas.system.setting_dao import settingsDao
@@ -13,13 +15,20 @@ logger = APILogger(__name__)
 class UserSettingMutation(MutationABC):
     def __init__(self):
         MutationABC.__init__(self, "UserSetting")
-        self.mutation(
-            "change",
-            self.resolve_change,
-            UserSettingInput,
-            require_any_permission=[Permissions.settings_update],
+        self.field(
+            MutationFieldBuilder("change")
+            .with_resolver(self.resolve_change)
+            .with_change_broadcast(
+                f"{first_to_lower(self.name.replace("Mutation", ""))}Change"
+            )
+            .with_input(UserSettingInput, "input")
+            .with_require_any([], [self._x])
         )
 
+    @staticmethod
+    async def _x(ctx):
+        return ctx.data.user_id == (await Route.get_user()).id
+
     @staticmethod
     async def resolve_change(obj: UserSettingInput, *_):
         logger.debug(f"create new setting: {input}")
diff --git a/api/src/core/configuration/feature_flags.py b/api/src/core/configuration/feature_flags.py
index ce259a5..8eaa333 100644
--- a/api/src/core/configuration/feature_flags.py
+++ b/api/src/core/configuration/feature_flags.py
@@ -1,3 +1,5 @@
+from typing import Union
+
 from core.configuration.feature_flags_enum import FeatureFlagsEnum
 from core.environment import Environment
 from data.schemas.system.feature_flag_dao import featureFlagDao
@@ -6,19 +8,31 @@ from data.schemas.system.feature_flag_dao import featureFlagDao
 class FeatureFlags:
     _flags = {
         FeatureFlagsEnum.version_endpoint.value: True,  # 15.01.2025
+        FeatureFlagsEnum.technical_demo_banner.value: False,  # 18.04.2025
         FeatureFlagsEnum.per_user_setup.value: Environment.get(
             "PER_USER_SETUP", bool, False
         ),  # 18.04.2025
     }
 
+    _overwrite_flags = [
+        FeatureFlagsEnum.per_user_setup.value,
+    ]
+
+    @staticmethod
+    def overwrite_flag(key: str):
+        return key in FeatureFlags._overwrite_flags
+
     @staticmethod
     def get_default(key: FeatureFlagsEnum) -> bool:
         return FeatureFlags._flags[key.value]
 
     @staticmethod
-    async def has_feature(key: FeatureFlagsEnum) -> bool:
-        value = await featureFlagDao.find_by_key(key.value)
-        if value is None:
-            return FeatureFlags.get_default(key)
+    async def has_feature(key: Union[str, FeatureFlagsEnum]) -> bool:
+        key_value = key.value if isinstance(key, FeatureFlagsEnum) else key
 
-        return value.value
+        value = await featureFlagDao.find_by_key(key_value)
+        return (
+            value.value
+            if value
+            else FeatureFlags.get_default(FeatureFlagsEnum(key_value))
+        )
diff --git a/api/src/core/configuration/feature_flags_enum.py b/api/src/core/configuration/feature_flags_enum.py
index d4475ca..c5af428 100644
--- a/api/src/core/configuration/feature_flags_enum.py
+++ b/api/src/core/configuration/feature_flags_enum.py
@@ -3,4 +3,5 @@ from enum import Enum
 
 class FeatureFlagsEnum(Enum):
     version_endpoint = "VersionEndpoint"
+    technical_demo_banner = "TechnicalDemoBanner"
     per_user_setup = "PerUserSetup"
diff --git a/api/src/data/seeder/feature_flags_seeder.py b/api/src/data/seeder/feature_flags_seeder.py
index 185312c..373e556 100644
--- a/api/src/data/seeder/feature_flags_seeder.py
+++ b/api/src/data/seeder/feature_flags_seeder.py
@@ -21,6 +21,7 @@ class FeatureFlagsSeeder(DataSeederABC):
             x.value: FeatureFlags.get_default(x) for x in FeatureFlagsEnum
         }
 
+        # Create new feature flags
         to_create = [
             FeatureFlag(0, x, possible_feature_flags[x])
             for x in possible_feature_flags.keys()
@@ -31,6 +32,19 @@ class FeatureFlagsSeeder(DataSeederABC):
             to_create_dicts = {x.key: x.value for x in to_create}
             logger.debug(f"Created feature flags: {to_create_dicts}")
 
+        # Update existing feature flags if they can be overwritten and have a different value
+        to_update = [
+            FeatureFlag(x.id, x.key, possible_feature_flags[x.key])
+            for x in feature_flags
+            if FeatureFlags.overwrite_flag(x.key)
+            and x.value != possible_feature_flags[x.key]
+        ]
+        if len(to_update) > 0:
+            await featureFlagDao.update_many(to_update)
+            to_update_dicts = {x.key: x.value for x in to_update}
+            logger.debug(f"Updated feature flags: {to_update_dicts}")
+
+        # Delete feature flags that are no longer defined
         to_delete = [
             x for x in feature_flags if x.key not in possible_feature_flags.keys()
         ]
diff --git a/web/src/app/service/sidebar.service.ts b/web/src/app/service/sidebar.service.ts
index b6f3a2d..49bff52 100644
--- a/web/src/app/service/sidebar.service.ts
+++ b/web/src/app/service/sidebar.service.ts
@@ -3,6 +3,7 @@ import { BehaviorSubject } from 'rxjs';
 import { MenuElement } from 'src/app/model/view/menu-element';
 import { AuthService } from 'src/app/service/auth.service';
 import { PermissionsEnum } from 'src/app/model/auth/permissionsEnum';
+import { FeatureFlagService } from 'src/app/service/feature-flag.service';
 
 @Injectable({
   providedIn: 'root',
@@ -11,7 +12,10 @@ export class SidebarService {
   visible$ = new BehaviorSubject<boolean>(true);
   elements$ = new BehaviorSubject<MenuElement[]>([]);
 
-  constructor(private auth: AuthService) {
+  constructor(
+    private auth: AuthService,
+    private featureFlags: FeatureFlagService
+  ) {
     this.auth.user$.subscribe(async () => {
       await this.setElements();
     });
@@ -40,16 +44,19 @@ export class SidebarService {
         label: 'common.groups',
         icon: 'pi pi-tags',
         routerLink: ['/admin/groups'],
-        visible: await this.auth.hasAnyPermissionLazy([PermissionsEnum.groups]),
+        visible:
+          (await this.auth.hasAnyPermissionLazy([PermissionsEnum.groups])) ||
+          (await this.featureFlags.get('PerUserSetup')),
       },
       {
         label: 'common.urls',
         icon: 'pi pi-tag',
         routerLink: ['/admin/urls'],
-        visible: await this.auth.hasAnyPermissionLazy([
-          PermissionsEnum.shortUrls,
-          PermissionsEnum.shortUrlsByAssignment,
-        ]),
+        visible:
+          (await this.auth.hasAnyPermissionLazy([
+            PermissionsEnum.shortUrls,
+            PermissionsEnum.shortUrlsByAssignment,
+          ])) || (await this.featureFlags.get('PerUserSetup')),
       },
       await this.sectionAdmin(),
     ];