diff --git a/chapters/sonne-7x4m9k/config.json b/chapters/sonne-7x4m9k/config.json
new file mode 100644
index 0000000..165be64
--- /dev/null
+++ b/chapters/sonne-7x4m9k/config.json
@@ -0,0 +1,6 @@
+{
+  "chapterName": "BNI Chapter Sonne",
+  "syncUrl": "https://bni-ulm.com/sonne/de/memberlist?chapterName=6035&regionIds=43671&isChapterwebsite=true",
+  "websiteUrl": "https://bni-ulm.de/sonne",
+  "defaultTimer": 60
+}
diff --git a/chapters/sonne-7x4m9k/members.json b/chapters/sonne-7x4m9k/members.json
new file mode 100644
index 0000000..9a30c6f
--- /dev/null
+++ b/chapters/sonne-7x4m9k/members.json
@@ -0,0 +1,4 @@
+{
+  "lastUpdated": "2026-04-17",
+  "members": []
+}
diff --git a/index.html b/index.html
index 0ff6b07..2d9a1bd 100644
--- a/index.html
+++ b/index.html
@@ -1120,8 +1120,8 @@
 <div id="view-display" class="view">
     <button id="fullscreen-btn" onclick="toggleFullscreen()" title="Vollbild">⛶</button>
     <div class="display-header">
-        <img class="bni-badge" src="logo.jpeg" alt="BNI Sonne Ulm">
-        <div class="chapter-name">Vorstellungsrunde</div>
+        <img class="bni-badge" id="display-logo" src="logo.jpeg" alt="BNI">
+        <div class="chapter-name" id="display-chapter-name">Vorstellungsrunde</div>
         <a href="#" onclick="window.location.hash=''" style="margin-left:16px;color:rgba(255,255,255,0.25);font-size:0.78rem;text-decoration:none;letter-spacing:1px;" title="Zur Steuerung">⚙ Steuerung</a>
     </div>
 
@@ -1149,7 +1149,7 @@
 
     <!-- Startbild: außerhalb der Karte, damit es unabhängig angezeigt werden kann -->
     <div id="display-empty" style="position:fixed;inset:0;display:flex;align-items:center;justify-content:center;z-index:10;">
-        <img src="logo.jpeg" alt="BNI Sonne Ulm" style="width:min(520px,72vw);height:auto;border-radius:24px;box-shadow:0 8px 60px rgba(0,0,0,0.5);">
+        <img id="display-logo-empty" src="logo.jpeg" alt="BNI" style="width:min(520px,72vw);height:auto;border-radius:24px;box-shadow:0 8px 60px rgba(0,0,0,0.5);">
     </div>
 
     <div class="main-card" id="main-card">
@@ -1213,8 +1213,8 @@
 
     <!-- Header -->
     <div class="ctrl-header">
-        <img class="bni-badge" src="logo.jpeg" alt="BNI Sonne Ulm">
-        <div class="ctrl-title">Vorstellungsrunde steuern</div>
+        <img class="bni-badge" id="ctrl-logo" src="logo.jpeg" alt="BNI">
+        <div class="ctrl-title" id="ctrl-chapter-name">Vorstellungsrunde steuern</div>
         <div class="flex-gap-8">
             <div class="status-dot dot-idle" id="sync-dot" title="Display-Verbindung"></div>
             <button class="btn btn-secondary btn-sm" onclick="resetMeeting()">↺ Neu starten</button>
@@ -1259,6 +1259,7 @@
                 <div class="panel-right-tab active" data-panel="visitors-panel" onclick="switchRightPanel('visitors-panel')">Besucher</div>
                 <div class="panel-right-tab" data-panel="members-panel" onclick="switchRightPanel('members-panel')">Mitglieder</div>
                 <div class="panel-right-tab" data-panel="substitutes-panel" onclick="switchRightPanel('substitutes-panel')">Vertretungen</div>
+                <div class="panel-right-tab" data-panel="admin-panel" onclick="switchRightPanel('admin-panel')">Admin</div>
             </div>
 
             <div class="panel-right-content">
@@ -1303,6 +1304,10 @@
                 </div>
 
                 <!-- SUBSTITUTES -->
+                <div id="admin-panel" class="right-panel-section">
+                    <!-- rendered by renderAdminPanel() -->
+                </div>
+
                 <div id="substitutes-panel" class="right-panel-section">
                     <div style="padding: 14px 16px 8px;">
                         <div style="font-size:0.85rem; color:var(--muted); margin-bottom:12px;">Mitglied als vertreten markieren:</div>
@@ -1610,7 +1615,7 @@
             <div style="font-weight:700;font-size:0.9rem;margin-bottom:6px;">Schritt 2 – Daten exportieren</div>
             <ol style="font-size:0.85rem;color:var(--muted);padding-left:18px;line-height:1.8;">
                 <li>BNI-Mitgliederliste öffnen:
-                    <a href="https://bni-ulm.com/sonne/de/memberlist?chapterName=6035&regionIds=43671&isChapterwebsite=true" target="_blank" style="color:var(--red);font-weight:600;">bni-ulm.com → Chapter Sonne</a>
+                    <a id="bni-sync-link" href="https://bni-ulm.com/sonne/de/memberlist?chapterName=6035&regionIds=43671&isChapterwebsite=true" target="_blank" style="color:var(--red);font-weight:600;">bni-ulm.com → Chapter Sonne</a>
                 </li>
                 <li>Warten bis alle Mitglieder geladen sind</li>
                 <li>Bookmarklet <strong>"BNI Mitglieder exportieren"</strong> klicken</li>
@@ -1638,10 +1643,32 @@
 </div>
 
 <script>
+// ============================================================
+// CONSTANTS & CHAPTER CONFIG
+// ============================================================
+const APP_VERSION = '1.1.0';
+const GITEA_RAW = 'http://72.60.134.73:3000/cheubaum/BNI-Sonne/raw/branch/main';
+const CHAPTER_CONFIG_KEY = 'bni-active-chapter';
+
+function loadChapterConfig() {
+    try { const s = localStorage.getItem(CHAPTER_CONFIG_KEY); return s ? JSON.parse(s) : null; } catch(e) { return null; }
+}
+function saveChapterConfig(cfg) {
+    localStorage.setItem(CHAPTER_CONFIG_KEY, JSON.stringify(cfg));
+}
+function clearChapterData() {
+    if (activeChapter) localStorage.removeItem(`bni-chapter-${activeChapter.code}-v2`);
+    if (activeChapter) localStorage.removeItem(`bni-extras-${activeChapter.code}`);
+    localStorage.removeItem(CHAPTER_CONFIG_KEY);
+    activeChapter = null;
+}
+
+let activeChapter = loadChapterConfig();
+let STORAGE_KEY = activeChapter ? `bni-chapter-${activeChapter.code}-v2` : 'bni-chapter-default-v2';
+
 // ============================================================
 // STATE
 // ============================================================
-const STORAGE_KEY = 'bni-sonne-v2';
 
 let state = loadState();
 let sortableInstance = null;
@@ -1685,7 +1712,7 @@ function saveState(broadcast = true) {
 // ============================================================
 // PROFILE EXTRAS (Kurzlinks + Offline-Fotos, persistent)
 // ============================================================
-const EXTRAS_KEY = 'bni-profile-extras';
+let EXTRAS_KEY = activeChapter ? `bni-extras-${activeChapter.code}` : 'bni-profile-extras';
 
 function loadExtras() {
     try {
@@ -1845,7 +1872,7 @@ let syncDot;
 
 function initChannel() {
     try {
-        channel = new BroadcastChannel('bni-sonne-channel');
+        channel = new BroadcastChannel('bni-channel-' + (activeChapter ? activeChapter.code : 'default'));
         channel.onmessage = (ev) => {
             if (ev.data.type === 'STATE_UPDATE') {
                 state = ev.data.state;
@@ -1889,9 +1916,12 @@ function getView() {
 }
 
 function renderCurrentView() {
+    const hasChapter = !!activeChapter;
     const view = getView();
-    document.getElementById('view-display').classList.toggle('active', view === 'display');
-    document.getElementById('view-control').classList.toggle('active', view === 'control');
+    document.getElementById('view-activation').classList.toggle('active', !hasChapter);
+    document.getElementById('view-display').classList.toggle('active', hasChapter && view === 'display');
+    document.getElementById('view-control').classList.toggle('active', hasChapter && view === 'control');
+    if (!hasChapter) return;
 
     if (view === 'display') {
         renderDisplay();
@@ -2365,6 +2395,7 @@ function renderControl() {
     renderSubstitutesList();
     renderSubstituteMemberSelect();
     renderInvitedBySelect();
+    renderAdminPanel();
     updateNextButton();
     syncDot = document.getElementById('sync-dot');
 }
@@ -3965,16 +3996,233 @@ function applyQueueRatio(ratio) {
     });
 })();
 
+// ============================================================
+// CHAPTER ACTIVATION & LICENSE
+// ============================================================
+async function activateChapter() {
+    const input = document.getElementById('activation-code-input');
+    const code = (input ? input.value : '').trim().toLowerCase();
+    if (!code) return;
+    const btn = document.getElementById('activation-btn');
+    const status = document.getElementById('activation-status');
+    btn.disabled = true;
+    status.textContent = 'Überprüfe Lizenzcode…';
+    status.style.color = 'rgba(255,255,255,0.6)';
+    try {
+        const res = await fetch(`${GITEA_RAW}/chapters/${code}/config.json`, { cache: 'no-store' });
+        if (!res.ok) {
+            status.textContent = 'Ungültiger oder abgelaufener Lizenzcode.';
+            status.style.color = '#f87171';
+            btn.disabled = false;
+            return;
+        }
+        const config = await res.json();
+        activeChapter = { code, config, activatedAt: new Date().toISOString(), lastChecked: new Date().toISOString() };
+        saveChapterConfig(activeChapter);
+        STORAGE_KEY = `bni-chapter-${code}-v2`;
+        EXTRAS_KEY = `bni-extras-${code}`;
+        state = loadState();
+        if (config.defaultTimer && !state.meetingOrder.length) {
+            state.defaultTimer = config.defaultTimer;
+            saveState(false);
+        }
+        applyChapterUI(config);
+        status.textContent = `✓ Chapter "${config.chapterName}" aktiviert!`;
+        status.style.color = '#4ade80';
+        setTimeout(() => {
+            renderCurrentView();
+            fetchChapterMembersFromGitea();
+        }, 800);
+    } catch(e) {
+        status.textContent = 'Verbindungsfehler. Bitte Internetverbindung prüfen.';
+        status.style.color = '#f87171';
+        btn.disabled = false;
+    }
+}
+
+function applyChapterUI(config) {
+    if (!config) return;
+    const name = config.chapterName || 'BNI Chapter';
+    document.title = `${name} – Vorstellungsrunde`;
+    const el = document.getElementById('display-chapter-name');
+    if (el) el.textContent = name;
+    const ctrlName = document.getElementById('ctrl-chapter-name');
+    if (ctrlName) ctrlName.textContent = `${name} – Steuerung`;
+    if (config.logoUrl && activeChapter) {
+        const src = config.logoUrl.startsWith('http') ? config.logoUrl
+            : `${GITEA_RAW}/chapters/${activeChapter.code}/${config.logoUrl}`;
+        ['display-logo','display-logo-empty','ctrl-logo'].forEach(id => {
+            const img = document.getElementById(id);
+            if (img) img.src = src;
+        });
+    }
+    const syncLink = document.getElementById('bni-sync-link');
+    if (syncLink && config.syncUrl) {
+        syncLink.href = config.syncUrl;
+        syncLink.textContent = name + ' – Mitgliederliste';
+    }
+}
+
+async function checkLicenseAndUpdates() {
+    if (!activeChapter) return;
+    try {
+        const res = await fetch(`${GITEA_RAW}/chapters/${activeChapter.code}/config.json`, { cache: 'no-store' });
+        if (!res.ok) {
+            clearChapterData();
+            state = defaultState();
+            alert('Deine Lizenz wurde widerrufen. Bitte gib einen neuen Code ein.');
+            renderCurrentView();
+            return;
+        }
+        const config = await res.json();
+        activeChapter.config = config;
+        activeChapter.lastChecked = new Date().toISOString();
+        saveChapterConfig(activeChapter);
+        applyChapterUI(config);
+        await checkForUpdates();
+    } catch(e) {
+        // Offline → continue with cached data
+        const dot = document.getElementById('sync-dot');
+        if (dot) dot.title = 'Offline – letzte Prüfung: ' + (activeChapter.lastChecked ? new Date(activeChapter.lastChecked).toLocaleDateString('de') : 'unbekannt');
+    }
+}
+
+async function checkForUpdates() {
+    try {
+        const res = await fetch(`${GITEA_RAW}/version.json`, { cache: 'no-store' });
+        if (!res.ok) return;
+        const data = await res.json();
+        if (data.version && data.version > APP_VERSION) showUpdateBanner(data.version, data.notes);
+    } catch(e) { /* ignore */ }
+}
+
+function showUpdateBanner(version, notes) {
+    let banner = document.getElementById('update-banner');
+    if (!banner) {
+        banner = document.createElement('div');
+        banner.id = 'update-banner';
+        banner.style.cssText = 'background:#1a2744;color:white;padding:8px 16px;display:flex;align-items:center;gap:12px;font-size:0.85rem;flex-shrink:0;z-index:100;';
+        const ctrlView = document.getElementById('view-control');
+        ctrlView.insertBefore(banner, ctrlView.firstChild);
+    }
+    banner.innerHTML = `🆕 Update ${version} verfügbar${notes ? ' – ' + notes : ''} &nbsp;<button onclick="downloadUpdate('${version}')" style="background:#cc0000;color:white;border:none;border-radius:6px;padding:4px 12px;cursor:pointer;font-size:0.82rem;font-weight:600;">Jetzt laden</button> <button onclick="this.parentElement.style.display='none'" style="background:transparent;border:none;color:rgba(255,255,255,0.5);cursor:pointer;margin-left:auto;font-size:1rem;">✕</button>`;
+}
+
+async function downloadUpdate(version) {
+    try {
+        const licRes = await fetch(`${GITEA_RAW}/chapters/${activeChapter.code}/config.json`, { cache: 'no-store' });
+        if (!licRes.ok) {
+            clearChapterData();
+            state = defaultState();
+            alert('Lizenz nicht mehr gültig. Bitte neuen Code eingeben.');
+            renderCurrentView();
+            return;
+        }
+    } catch(e) { alert('Keine Serververbindung möglich.'); return; }
+    try {
+        const res = await fetch(`${GITEA_RAW}/index.html`, { cache: 'no-store' });
+        const html = await res.text();
+        const blob = new Blob([html], { type: 'text/html' });
+        const a = document.createElement('a');
+        a.href = URL.createObjectURL(blob);
+        a.download = 'index.html';
+        a.click();
+        URL.revokeObjectURL(a.href);
+    } catch(e) { alert('Download fehlgeschlagen: ' + e.message); }
+}
+
+async function fetchChapterMembersFromGitea() {
+    if (!activeChapter) return;
+    try {
+        const res = await fetch(`${GITEA_RAW}/chapters/${activeChapter.code}/members.json`, { cache: 'no-store' });
+        if (!res.ok) return;
+        const data = await res.json();
+        if (!data.members || !data.members.length) return;
+        const mergedMap = new Map(state.members.map(m => [m.id, m]));
+        data.members.forEach(m => {
+            const ex = mergedMap.get(m.id);
+            mergedMap.set(m.id, ex ? Object.assign({}, ex, m) : m);
+        });
+        state.members = Array.from(mergedMap.values());
+        const knownIds = new Set(state.meetingOrder);
+        state.members.forEach(m => { if (!knownIds.has(m.id)) state.meetingOrder.push(m.id); });
+        activeChapter.lastMemberSync = new Date().toISOString();
+        saveChapterConfig(activeChapter);
+        saveState(false);
+        renderCurrentView();
+        renderAdminPanel();
+    } catch(e) { /* ignore */ }
+}
+
+function renderAdminPanel() {
+    const panel = document.getElementById('admin-panel');
+    if (!panel) return;
+    const cfg = activeChapter && activeChapter.config;
+    const code = activeChapter && activeChapter.code;
+    const lastChecked = activeChapter && activeChapter.lastChecked ? new Date(activeChapter.lastChecked).toLocaleString('de') : '—';
+    const lastSync = activeChapter && activeChapter.lastMemberSync ? new Date(activeChapter.lastMemberSync).toLocaleString('de') : '—';
+    const maskedCode = code ? code.slice(0, -3).replace(/./g, '·') + code.slice(-3) : '—';
+
+    panel.innerHTML = `<div style="padding:16px;overflow-y:auto;height:100%;">
+        <div style="font-weight:700;font-size:0.9rem;margin-bottom:14px;">Chapter-Administration</div>
+        ${cfg ? `
+        <div style="background:#f8f9fa;border:1px solid var(--border);border-radius:8px;padding:12px;margin-bottom:14px;">
+            <div style="font-size:0.78rem;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:1px;margin-bottom:6px;">Aktives Chapter</div>
+            <div style="font-weight:600;margin-bottom:2px;">${cfg.chapterName || '—'}</div>
+            <div style="font-size:0.82rem;color:var(--muted);">Version: <strong>${APP_VERSION}</strong></div>
+            <div style="font-size:0.82rem;color:var(--muted);">Letzte Lizenzprüfung: ${lastChecked}</div>
+        </div>
+        <button class="btn btn-secondary btn-sm" style="width:100%;margin-bottom:6px;" onclick="fetchChapterMembersFromGitea()">🔄 Mitglieder vom Server laden</button>
+        <div style="font-size:0.78rem;color:var(--muted);margin-bottom:14px;">Letzte Synchronisation: ${lastSync}</div>
+        <button class="btn btn-secondary btn-sm" style="width:100%;margin-bottom:6px;" onclick="checkForUpdates()">🔍 Auf Updates prüfen</button>
+        <div style="font-size:0.78rem;color:var(--muted);margin-bottom:20px;"></div>
+        ` : `<div style="color:var(--muted);font-size:0.88rem;margin-bottom:20px;">Kein Chapter aktiviert.</div>`}
+        <div style="border-top:1px solid var(--border);padding-top:14px;">
+            <button class="btn btn-ghost btn-sm" style="width:100%;" onclick="confirmSwitchChapter()">↔ Chapter wechseln</button>
+        </div>
+    </div>`;
+}
+
+function confirmSwitchChapter() {
+    if (!confirm('Chapter wechseln?\n\nAlle lokalen Daten dieses Chapters werden gelöscht. Fortfahren?')) return;
+    clearChapterData();
+    state = defaultState();
+    renderCurrentView();
+}
+
 // ============================================================
 // INIT
 // ============================================================
 initChannel();
+if (activeChapter) applyChapterUI(activeChapter.config);
 renderCurrentView();
+checkLicenseAndUpdates();
 
 // Keyboard shortcut hint
 if (getView() === 'control') {
     console.log('Tastaturkürzel: Leertaste oder → = Weiter');
 }
 </script>
+
+<!-- ============================================================
+     ACTIVATION VIEW
+============================================================ -->
+<div id="view-activation" class="view" style="background:linear-gradient(160deg,#0f1f45 0%,#1a2744 40%,#0d1b35 100%);align-items:center;justify-content:center;flex-direction:column;">
+    <img id="activation-logo" src="logo.jpeg" alt="BNI" style="height:80px;margin-bottom:32px;border-radius:8px;object-fit:contain;">
+    <div style="background:rgba(255,255,255,0.08);backdrop-filter:blur(20px);border:1px solid rgba(255,255,255,0.15);border-radius:20px;padding:40px;width:min(420px,90vw);color:white;">
+        <div style="font-size:1.4rem;font-weight:700;margin-bottom:6px;">BNI Vorstellungsrunde</div>
+        <div style="font-size:0.88rem;color:rgba(255,255,255,0.6);margin-bottom:24px;">Bitte gib deinen Lizenzcode ein, um dein Chapter freizuschalten.</div>
+        <input id="activation-code-input" type="text" placeholder="chapter-lizenzcode"
+               style="width:100%;padding:12px 14px;background:rgba(255,255,255,0.1);border:1px solid rgba(255,255,255,0.25);border-radius:10px;color:white;font-size:1rem;outline:none;margin-bottom:12px;letter-spacing:1px;"
+               onkeydown="if(event.key==='Enter')activateChapter()"
+               autocomplete="off" autocorrect="off" autocapitalize="off" spellcheck="false">
+        <div id="activation-status" style="font-size:0.85rem;min-height:20px;margin-bottom:12px;"></div>
+        <button id="activation-btn" onclick="activateChapter()"
+                style="width:100%;padding:12px;background:#cc0000;color:white;border:none;border-radius:10px;font-size:1rem;font-weight:700;cursor:pointer;">
+            Aktivieren
+        </button>
+    </div>
+</div>
+
 </body>
 </html>
diff --git a/version.json b/version.json
new file mode 100644
index 0000000..fd0e770
--- /dev/null
+++ b/version.json
@@ -0,0 +1,4 @@
+{
+  "version": "1.1.0",
+  "notes": "Multi-Chapter-Support mit Lizenzcode"
+}