diff --git a/about/index.html b/about/index.html
index 758e764..8f3e10c 100644
--- a/about/index.html
+++ b/about/index.html
@@ -40,6 +40,16 @@
         <li>Live: windows open as people go live and close when they stop. Click a window to hear it; the speaker button pins audio on; the slider is per window.</li>
       </ul>
     </details>
+    <details><summary>Live page: windows, groups, names</summary>
+      <ul>
+        <li><b>Layout.</b> Windows arrange themselves into an even grid whenever someone goes live or stops. Drag a tab to move a window, drag the bars between windows to resize, drop a tab onto another window to stack them as tabs. <b>Arrange</b> (top bar) snaps everything back to the grid.</li>
+        <li><b>Audio.</b> Sound follows the window you click. The speaker button pins a window's audio on even when you click elsewhere; <b>Mute all</b> silences everything until you click a window; <b>Follow focus</b> clears pins.</li>
+        <li><b>Rename a stream.</b> Double-click its tab, type a name, Enter. Escape cancels; an empty name goes back to <code>user · title</code>. Names stay in your browser and come back the next time that streamer uses the same title.</li>
+        <li><b>Name a group.</b> Every tab bar starts with a <code>＋ name</code> slot. Double-click it, type, Enter. Group names last until you reload the page.</li>
+        <li><b>One window big.</b> The ⛶ button at the right of a tab bar maximises that window; click it again to restore. Arranging (a stream joining or leaving, or the Arrange button) restores it too.</li>
+        <li><b>Timecode band.</b> Streams with the timecode band on show it cropped off automatically; recordings never contain it.</li>
+      </ul>
+    </details>
   </section>
 
 
diff --git a/live/src/App.jsx b/live/src/App.jsx
index c8e2d9f..f7e8cf2 100644
--- a/live/src/App.jsx
+++ b/live/src/App.jsx
@@ -6,6 +6,7 @@ import { audio } from './useAudio.js'
 import GoLive from './GoLive.jsx'
 import Tab from './Tab.jsx'
 import GroupLabel from './GroupLabel.jsx'
+import GroupActions from './GroupActions.jsx'
 import { streamLabel } from './names.js'
 
 const components = { player: Player }
@@ -18,6 +19,7 @@ const POLL_MS = 3000
 export function arrange(api) {
   const panels = [...api.panels].sort((a, b) => ((a.params?.since || '').localeCompare(b.params?.since || '')) || a.id.localeCompare(b.id))
   const n = panels.length; if (n < 2) return
+  if (api.hasMaximizedGroup?.()) api.exitMaximizedGroup?.()     // a maximised window would hide the new grid
   const cols = Math.ceil(Math.sqrt(n))
   for (let i = 1; i < n; i++) {
     const r = Math.floor(i / cols), c = i % cols
@@ -92,7 +94,7 @@ export default function App() {
         )}
         <div className="dock" style={{ display: streams.length ? 'block' : 'none' }}>
           <DockviewReact className="dockview-theme-vanguard" components={components} tabComponents={tabComponents}
-                         leftHeaderActionsComponent={GroupLabel} onReady={onReady} />
+                         leftHeaderActionsComponent={GroupLabel} rightHeaderActionsComponent={GroupActions} onReady={onReady} />
         </div>
       </>)}
     </div>
diff --git a/live/src/GroupActions.jsx b/live/src/GroupActions.jsx
new file mode 100644
index 0000000..ef5704e
--- /dev/null
+++ b/live/src/GroupActions.jsx
@@ -0,0 +1,16 @@
+import React, { useEffect, useState } from 'react'
+
+// Right end of every tab bar: maximise / restore this group.
+export default function GroupActions({ api, containerApi }) {
+  const [max, setMax] = useState(() => api.isMaximized())
+  useEffect(() => {
+    const d = containerApi.onDidMaximizedGroupChange?.(() => setMax(api.isMaximized()))
+    return () => d?.dispose?.()
+  }, [api, containerApi])
+  const toggle = e => { e.stopPropagation(); if (api.isMaximized()) api.exitMaximized(); else api.maximize(); setMax(api.isMaximized()) }
+  return (
+    <div className="groupactions" onPointerDown={e => e.stopPropagation()}>
+      <button className="gbtn" onClick={toggle} title={max ? 'restore' : 'maximise this window'}>{max ? '🗗' : '⛶'}</button>
+    </div>
+  )
+}
diff --git a/live/src/styles.css b/live/src/styles.css
index 6c08870..6887410 100644
--- a/live/src/styles.css
+++ b/live/src/styles.css
@@ -71,3 +71,6 @@ html, body, #root { height:100%; margin:0; background:var(--bg); color:var(--fg)
 .grouplabel { display:flex; align-items:center; height:100%; padding:0 10px; font-size:12px; white-space:nowrap; border-right:1px solid #2a2a2a; cursor:default; }
 .grouplabel .gname { color:var(--acc); font-weight:700; }
 .grouplabel .hint { color:#555; }
+.groupactions { display:flex; align-items:center; height:100%; padding:0 6px; }
+.gbtn { background:transparent; color:var(--mut); border:0; cursor:pointer; font-size:14px; padding:0 6px; line-height:1; }
+.gbtn:hover { color:var(--fg); }