diff --git a/frontend/src/components/shared/Sidebar.tsx b/frontend/src/components/shared/Sidebar.tsx
index d385734..d82d233 100644
--- a/frontend/src/components/shared/Sidebar.tsx
+++ b/frontend/src/components/shared/Sidebar.tsx
@@ -56,16 +56,10 @@ interface NavigationItem {
 }
 
 const adminSubItems: SubItem[] = [
-  { text: 'Services', path: '/admin?tab=0' },
-  { text: 'System', path: '/admin?tab=1' },
-  { text: 'Benutzer', path: '/admin?tab=2' },
-  { text: 'Broadcast', path: '/admin?tab=3' },
-  { text: 'Banner', path: '/admin?tab=4' },
-  { text: 'Wartung', path: '/admin?tab=5' },
-  { text: 'Berechtigungen', path: '/admin?tab=6' },
-  { text: 'Bestellungen', path: '/admin?tab=7' },
-  { text: 'Datenverwaltung', path: '/admin?tab=8' },
-  { text: 'Debug', path: '/admin?tab=9' },
+  { text: 'Information', path: '/admin?tab=0' },
+  { text: 'System Mitteilungen', path: '/admin?tab=1' },
+  { text: 'Tool Zugriff', path: '/admin?tab=2' },
+  { text: 'Daten', path: '/admin?tab=3' },
 ];
 
 const baseNavigationItems: NavigationItem[] = [
diff --git a/frontend/src/pages/AdminDashboard.tsx b/frontend/src/pages/AdminDashboard.tsx
index 4aa5d35..42aae5d 100644
--- a/frontend/src/pages/AdminDashboard.tsx
+++ b/frontend/src/pages/AdminDashboard.tsx
@@ -9,9 +9,8 @@ import NotificationBroadcastTab from '../components/admin/NotificationBroadcastT
 import BannerManagementTab from '../components/admin/BannerManagementTab';
 import ServiceModeTab from '../components/admin/ServiceModeTab';
 import PermissionMatrixTab from '../components/admin/PermissionMatrixTab';
-import BestellungenTab from '../components/admin/BestellungenTab';
 import DataManagementTab from '../components/admin/DataManagementTab';
-import DebugTab from '../components/admin/DebugTab';
+import FdiskSyncTab from '../components/admin/FdiskSyncTab';
 import { usePermissionContext } from '../contexts/PermissionContext';
 
 interface TabPanelProps {
@@ -25,7 +24,19 @@ function TabPanel({ children, value, index }: TabPanelProps) {
   return <Box sx={{ pt: 3 }}>{children}</Box>;
 }
 
-const ADMIN_TAB_COUNT = 10;
+function SubTabs({ labels, children }: { labels: string[]; children: React.ReactNode[] }) {
+  const [subTab, setSubTab] = useState(0);
+  return (
+    <Box>
+      <Tabs value={subTab} onChange={(_e, v) => setSubTab(v)} sx={{ mb: 2, borderBottom: 1, borderColor: 'divider' }}>
+        {labels.map((l) => <Tab key={l} label={l} />)}
+      </Tabs>
+      {children.map((child, i) => subTab === i ? <Box key={i}>{child}</Box> : null)}
+    </Box>
+  );
+}
+
+const ADMIN_TAB_COUNT = 4;
 
 function AdminDashboard() {
   const navigate = useNavigate();
@@ -51,48 +62,32 @@ function AdminDashboard() {
 
       <Box sx={{ borderBottom: 1, borderColor: 'divider' }}>
         <Tabs value={tab} onChange={(_e, v) => { setTab(v); navigate(`/admin?tab=${v}`, { replace: true }); }} variant="scrollable" scrollButtons="auto">
-          <Tab label="Services" />
-          <Tab label="System" />
-          <Tab label="Benutzer" />
-          <Tab label="Broadcast" />
-          <Tab label="Banner" />
-          <Tab label="Wartung" />
-          <Tab label="Berechtigungen" />
-          <Tab label="Bestellungen" />
-          <Tab label="Datenverwaltung" />
-          <Tab label="Debug" />
+          <Tab label="Information" />
+          <Tab label="System Mitteilungen" />
+          <Tab label="Tool Zugriff" />
+          <Tab label="Daten" />
         </Tabs>
       </Box>
 
       <TabPanel value={tab} index={0}>
-        <ServiceManagerTab />
+        <SubTabs labels={['Services', 'System', 'Benutzer']}>
+          {[<ServiceManagerTab />, <SystemHealthTab />, <UserOverviewTab />]}
+        </SubTabs>
       </TabPanel>
       <TabPanel value={tab} index={1}>
-        <SystemHealthTab />
+        <SubTabs labels={['Broadcast', 'Banner']}>
+          {[<NotificationBroadcastTab />, <BannerManagementTab />]}
+        </SubTabs>
       </TabPanel>
       <TabPanel value={tab} index={2}>
-        <UserOverviewTab />
+        <SubTabs labels={['Wartung', 'Berechtigungen']}>
+          {[<ServiceModeTab />, <PermissionMatrixTab />]}
+        </SubTabs>
       </TabPanel>
       <TabPanel value={tab} index={3}>
-        <NotificationBroadcastTab />
-      </TabPanel>
-      <TabPanel value={tab} index={4}>
-        <BannerManagementTab />
-      </TabPanel>
-      <TabPanel value={tab} index={5}>
-        <ServiceModeTab />
-      </TabPanel>
-      <TabPanel value={tab} index={6}>
-        <PermissionMatrixTab />
-      </TabPanel>
-      <TabPanel value={tab} index={7}>
-        <BestellungenTab />
-      </TabPanel>
-      <TabPanel value={tab} index={8}>
-        <DataManagementTab />
-      </TabPanel>
-      <TabPanel value={tab} index={9}>
-        <DebugTab />
+        <SubTabs labels={['Datenverwaltung', 'FDISK Sync']}>
+          {[<DataManagementTab />, <FdiskSyncTab />]}
+        </SubTabs>
       </TabPanel>
     </DashboardLayout>
   );