diff --git a/web/js/multi_bool_panel.js b/web/js/multi_bool_panel.js
index 5704165..91d9927 100644
--- a/web/js/multi_bool_panel.js
+++ b/web/js/multi_bool_panel.js
@@ -16,27 +16,42 @@ function getPanelMode(node) {
   return getModeWidget(node)?.value ?? "widgets";
 }
 
-/** Resolve target nodes whose title starts with "<panelTitle>:" and item part is non-empty. */
+/** Resolve target nodes/groups whose title starts with "<panelTitle>:" and item part is non-empty. */
 function resolveTargets(panelNode) {
   const prefix = panelNode.title;
   if (!prefix) return [];
   const needle = prefix + ":";
-  return (app.graph._nodes || []).filter((n) => {
-    if (n.id === panelNode.id) return false;
-    if (!n.title || !n.title.startsWith(needle)) return false;
-    const item = n.title.slice(needle.length).trim();
-    return item.length > 0;
+  const mode = getPanelMode(panelNode);
+  const targets = [];
+  // Nodes
+  (app.graph._nodes || []).forEach((n) => {
+    if (n.id === panelNode.id) return;
+    if (!n.title || !n.title.startsWith(needle)) return;
+    const name = n.title.slice(needle.length).trim();
+    if (name.length > 0) targets.push({ kind: "node", ref: n, name });
   });
+  // Groups — only relevant in bypass/mute modes (widgets mode targets boolean widgets)
+  if (mode !== "widgets") {
+    (app.graph._groups || []).forEach((g) => {
+      if (!g.title || !g.title.startsWith(needle)) return;
+      const name = g.title.slice(needle.length).trim();
+      if (name.length > 0) targets.push({ kind: "group", ref: g, name });
+    });
+  }
+  return targets;
 }
 
-/** Extract item name (part after ":") from a target node title. */
-function itemName(panelNode, targetNode) {
-  const prefix = panelNode.title + ":";
-  return targetNode.title.slice(prefix.length).trim();
-}
-
-/** Get current real state of a target node for a given panel mode. */
-function currentRealValue(targetNode, mode) {
+/** Get current real state of a target (node or group) for a given panel mode. */
+function currentRealValue(target, mode) {
+  if (target.kind === "group") {
+    const g = target.ref;
+    if (typeof g.recomputeInsideNodes === "function") g.recomputeInsideNodes();
+    const members = g._nodes || [];
+    if (members.length === 0) return false;
+    const m = mode === "bypass" ? 2 : 4;
+    return members.every((n) => n.mode === m);
+  }
+  const targetNode = target.ref;
   if (mode === "bypass") return targetNode.mode === 2;
   if (mode === "mute") return targetNode.mode === 4;
   // widgets: first boolean widget value
@@ -53,8 +68,18 @@ function hasBooleanWidget(targetNode) {
   );
 }
 
-/** Apply a toggle value to a target node. */
-function applyValue(targetNode, mode, value) {
+/** Apply a toggle value to a target (node or group). */
+function applyValue(target, mode, value) {
+  if (target.kind === "group") {
+    if (mode === "widgets") return; // groups are never included in widgets mode
+    const g = target.ref;
+    if (typeof g.recomputeInsideNodes === "function") g.recomputeInsideNodes();
+    const m = value ? (mode === "bypass" ? 2 : 4) : 0;
+    (g._nodes || []).forEach((n) => { n.mode = m; });
+    app.graph.setDirtyCanvas(true, true);
+    return;
+  }
+  const targetNode = target.ref;
   if (mode === "bypass") {
     targetNode.mode = value ? 2 : 0;
   } else if (mode === "mute") {
@@ -87,7 +112,7 @@ const PANELS_CHECK_MS = 150;
 function relevantKey(panel) {
   const mode = getPanelMode(panel);
   const names = resolveTargets(panel)
-    .map((t) => itemName(panel, t).toLowerCase())
+    .map((t) => t.name.toLowerCase())
     .sort();
   return (panel.title || "") + "\u0000" + mode + "\u0000" + names.join("\u0000");
 }
@@ -179,16 +204,13 @@ function buildPanel(panelNode) {
 
     // Sort case-insensitively by item name
     targets.sort((a, b) => {
-      const na = itemName(panelNode, a).toLowerCase();
-      const nb = itemName(panelNode, b).toLowerCase();
+      const na = a.name.toLowerCase();
+      const nb = b.name.toLowerCase();
       return na.localeCompare(nb);
     });
 
     // Build rows data
-    let rows = targets.map((t) => {
-      const name = itemName(panelNode, t);
-      return { node: t, name };
-    });
+    let rows = targets.map((t) => ({ target: t, name: t.name }));
 
     // Limit
     const overflow = rows.length > MAX_ITEMS ? rows.length - MAX_ITEMS : 0;
@@ -210,7 +232,7 @@ function buildPanel(panelNode) {
     }
 
     // Render rows
-    rows.forEach(({ node: t, name }) => {
+    rows.forEach(({ target: t, name }) => {
       const row = document.createElement("div");
       row.style.cssText =
         "display:flex;align-items:center;justify-content:space-between;" +
@@ -219,8 +241,16 @@ function buildPanel(panelNode) {
 
       // Determine enabled state
       let disabled = false;
-      if (mode === "widgets" && !hasBooleanWidget(t)) {
+      let disabledTip = "";
+      if (t.kind === "group") {
+        if (typeof t.ref.recomputeInsideNodes === "function") t.ref.recomputeInsideNodes();
+        if ((t.ref._nodes || []).length === 0) {
+          disabled = true;
+          disabledTip = "グループ内にノードがありません";
+        }
+      } else if (mode === "widgets" && !hasBooleanWidget(t.ref)) {
         disabled = true;
+        disabledTip = "booleanウィジェットがありません";
       }
 
       // Label
@@ -230,7 +260,7 @@ function buildPanel(panelNode) {
         "font-size:12px;" + (disabled ? "color:#555;" : "color:#ccc;");
       label.textContent = name;
       if (disabled) {
-        label.title = "booleanウィジェットがありません";
+        label.title = disabledTip;
       }
       row.appendChild(label);
 
@@ -337,9 +367,9 @@ function buildPanel(panelNode) {
   let prevChange = null;
   let prevNodeAdded = null;
   let prevNodeRemoved = null;
-  const onChangeWrapper = (g) => { prevChange?.(g); scheduleRefresh(); };
-  const onNodeAddedWrapper = (n) => { prevNodeAdded?.(n); scheduleRefresh(); };
-  const onNodeRemovedWrapper = (n) => { prevNodeRemoved?.(n); scheduleRefresh(); };
+  const onChangeWrapper = (g) => { prevChange?.(g); schedulePanelsCheck(); };
+  const onNodeAddedWrapper = (n) => { prevNodeAdded?.(n); schedulePanelsCheck(); };
+  const onNodeRemovedWrapper = (n) => { prevNodeRemoved?.(n); schedulePanelsCheck(); };
 
   function installGraphHooks(g) {
     if (!g || panelNode.__hooksInstalled) return;