```
 ### PictureInPicture
 
-Enable or disable Picture-in-Picture.
+Enable or disable Picture-in-Picture as well as lock it.
 
 **Compatibility:** Firefox 78, Firefox ESR 78\
 **CCK2 Equivalent:** N/A\
 
 #### Windows (GPO)
 ```
-Software\Policies\Mozilla\Firefox\PictureInPicture = 0x1 | 0x0
+Software\Policies\Mozilla\Firefox\PictureInPicture\Enabled = 0x1 | 0x0
+Software\Policies\Mozilla\Firefox\PictureInPicture\Locked = 0x1 | 0x0
+
 ```
 #### Windows (Intune)
 OMA-URI:
 ```
-./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/PictureInPicture
+./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~PictureInPicture/PictureInPicture_Enabled
+./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~PictureInPicture/PictureInPicture_Locked
 ```
 Value (string):
 ```
 ```
 <dict>
   <key>PictureInPicture</key>
-  <true/> | <false/>
+  <dict>
+    <key>Enabled</key>
+    <true/> | <false/>
+    <key>Locked</key>
+    <true/> | <false/>
+  </dict>
 </dict>
 ```
 #### policies.json
 ```
 {
   "policies": {
-    "PictureInPicture": true | false
+    "PictureInPicture": {
+      "Enabled": true | false,
+      "Locked": true, false
+    }
   }
 }
 ```
 
                </dict>
        </dict>
        <key>PictureInPicture</key>
-       <false/>
+       <dict>
+               <key>Enabled</key>
+               <false/>
+               <key>Locked</key>
+               <true/>
+       </dict>
        <key>PopupBlocking</key>
        <dict>
                <key>Allow</key>
 
       <string id="DisabledCiphers_group">Disabled Ciphers</string>
       <string id="EncryptedMediaExtensions_group">DRM-Medien Erweiterungen</string>
       <string id="PDFjs_group">PDFjs</string>
+      <string id="PictureInPicture_group">Bild in Bild</string>
       <string id="Allow">Erlaubte Seiten</string>
       <string id="AllowSession">Erlaubte Seiten (Session Only)</string>
       <string id="Block">Gesperrte Seiten</string>
       <string id="PDFjs_EnablePermissions_Explain">Wenn diese Richtlinieneinstellung aktiviert ist, werden Berechtigungen des PDF-Dokuments (wie z.B. Markieren und Kopieren von Text verhindern) angewendet.
 
 Wenn diese Richtlinieneinstellung deaktiviert oder nicht konfiguriert ist, werden Berechtigungen im PDF-Dokument ignoriert.</string>
-      <string id="PictureInPicture">Bild in Bild</string>
-      <string id="PictureInPicture_Explain">Wenn diese Richtlinieneinstellung deaktiviert ist, ist die Bild-in-Bild Funktion deaktiviert.
+      <string id="PictureInPicture_Enabled">Aktiviert</string>
+      <string id="PictureInPicture_Enabled_Explain">Wenn diese Richtlinieneinstellung deaktiviert ist, ist die Bild-in-Bild Funktion deaktiviert.
 
 Wenn diese Richtlinieneinstellung aktiviert oder nicht konfiguriert ist, ist die Bild-in-Bild Funktion verfügbar.</string>
+      <string id="PictureInPicture_Locked">Gesperrt</string>
+      <string id="PictureInPicture_Locked_Explain">Wenn diese Richtlinieneinstellung aktiviert ist, können die Bild-in-Bild-Einstellungen vom Benutzer nicht geändert werden.
+
+Wenn diese Richtlinieneinstellung deaktiviert oder nicht konfiguriert ist, können die Bild-in-Bild-Einstellungen vom Benutzer geändert werden.</string>
       <string id="PrimaryPassword">Masterpasswort</string>
       <string id="PrimaryPassword_Explain">Wenn diese Richtlinieneinstellung aktiviert ist, ist das Setzen eines Masterpasswortes erforderlich.
 
 
       <string id="DisabledCiphers_group">Disabled Ciphers</string>
       <string id="EncryptedMediaExtensions_group">Encrypted Media Extensions</string>
       <string id="PDFjs_group">PDFjs</string>
+      <string id="PictureInPicture_group">Picture-in-Picture</string>
       <string id="Allow">Allowed Sites</string>
       <string id="AllowSession">Allowed Sites (Session Only)</string>
       <string id="Block">Blocked Sites</string>
       <string id="PDFjs_EnablePermissions_Explain">If this policy is enabled, the built-in PDF viewer will honor document permissions like preventing the copying of text.
 
 If this policy is not disabled or not configured, document permissions are ignored.</string>
-      <string id="PictureInPicture">Picture-in-Picture</string>
-      <string id="PictureInPicture_Explain">If this policy is disabled, the Picture-in-Picture toggle does not appear on videos.
+      <string id="PictureInPicture_Enabled">Enabled</string>
+      <string id="PictureInPicture_Enabled_Explain">If this policy is disabled, the Picture-in-Picture toggle does not appear on videos.
 
 If this policy is enabled or not configured, the Picture-in-Picture toggle is available on videos.</string>
+      <string id="PictureInPicture_Locked">Locked</string>
+      <string id="PictureInPicture_Locked_Explain">If this policy is enabled, Picture-in-Picture settings cannot be changed by the user.
+
+If this policy is disabled or not configured,Picture-in-Picture settings can be changed by the user.</string>
       <string id="PrimaryPassword">Primary (Master) Password</string>
       <string id="PrimaryPassword_Explain">If this policy is enabled, a primary password is required.
 
 
       <string id="DisabledCiphers_group">Cifrados deshabilitados</string>
       <string id="EncryptedMediaExtensions_group">Extensiones de medios cifrados</string>
       <string id="PDFjs_group">PDFjs</string>
+      <string id="PictureInPicture_group">Picture-in-Picture</string>
       <string id="Allow">Sitios permitidos</string>
       <string id="AllowSession">Sitios permitidos (Session Only)</string>
       <string id="Block">Sitios bloqueados</string>
       <string id="PDFjs_EnablePermissions_Explain">Si esta política está habilitada, el visor de PDF incorporado respetará los permisos del documento, como evitar la copia de texto.
 
 Si esta política no está deshabilitada o no está configurada, se ignorarán los permisos del documento.</string>
-      <string id="PictureInPicture">Picture-in-Picture</string>
-      <string id="PictureInPicture_Explain">If this policy is disabled, the Picture-in-Picture toggle does not appear on videos.
+      <string id="PictureInPicture_Enabled">Enabled</string>
+      <string id="PictureInPicture_Enabled_Explain">If this policy is disabled, the Picture-in-Picture toggle does not appear on videos.
 
 If this policy is enabled or not configured, the Picture-in-Picture toggle is available on videos.</string>
+      <string id="PictureInPicture_Locked">Locked</string>
+      <string id="PictureInPicture_Locked_Explain">If this policy is enabled, Picture-in-Picture settings cannot be changed by the user.
+
+If this policy is disabled or not configured,Picture-in-Picture settings can be changed by the user.</string>
       <string id="PrimaryPassword">Primary (Master) Password</string>
       <string id="PrimaryPassword_Explain">If this policy is enabled, a primary password is required.
 
 
     <category displayName="$(string.PDFjs_group)" name="PDFjs">
       <parentCategory ref="firefox"/>
     </category>
+    <category displayName="$(string.PictureInPicture_group)" name="PictureInPicture">
+      <parentCategory ref="firefox"/>
+    </category>
   </categories>
   <policies>
     <policy name="AppAutoUpdate" class="Both" displayName="$(string.AppAutoUpdate)" explainText="$(string.AppAutoUpdate_Explain)" key="Software\Policies\Mozilla\Firefox" valueName="AppAutoUpdate">
         <decimal value="0"/>
       </disabledValue>
     </policy>
-    <policy name="PictureInPicture" class="Both" displayName="$(string.PictureInPicture)" explainText="$(string.PictureInPicture_Explain)" key="Software\Policies\Mozilla\Firefox" valueName="PictureInPicture">
-      <parentCategory ref="firefox"/>
+    <policy name="PictureInPicture_Enabled" class="Both" displayName="$(string.PictureInPicture_Enabled)" explainText="$(string.PictureInPicture_Enabled_Explain)" key="Software\Policies\Mozilla\Firefox\PictureInPicture" valueName="Enabled">
+      <parentCategory ref="PictureInPicture"/>
+      <supportedOn ref="SUPPORTED_FF78"/>
+      <enabledValue>
+        <decimal value="1"/>
+      </enabledValue>
+      <disabledValue>
+        <decimal value="0"/>
+      </disabledValue>
+    </policy>
+    <policy name="PictureInPicture_Locked" class="Both" displayName="$(string.PictureInPicture_Locked)" explainText="$(string.PictureInPicture_Enabled_Explain)" key="Software\Policies\Mozilla\Firefox\PictureInPicture" valueName="Locked">
+      <parentCategory ref="PictureInPicture"/>
       <supportedOn ref="SUPPORTED_FF78"/>
       <enabledValue>
         <decimal value="1"/>
 
       <string id="DisabledCiphers_group">Disabled Ciphers</string>\r
       <string id="EncryptedMediaExtensions_group">Encrypted Media Extensions</string>\r
       <string id="PDFjs_group">PDFjs</string>\r
+      <string id="PictureInPicture_group">Picture-in-Picture</string>\r
       <string id="Allow">Sites autorisés</string>\r
       <string id="AllowSession">Sites autorisés (Session Only)</string>\r
       <string id="Block">Sites bloqués</string>\r
       <string id="PDFjs_EnablePermissions_Explain">If this policy is enabled, the built-in PDF viewer will honor document permissions like preventing the copying of text.\r
 \r
 If this policy is not disabled or not configured, document permissions are ignored.</string>\r
-      <string id="PictureInPicture">Picture-in-Picture</string>\r
-      <string id="PictureInPicture_Explain">If this policy is disabled, the Picture-in-Picture toggle does not appear on videos.\r
+      <string id="PictureInPicture_Enabled">Enabled</string>\r
+      <string id="PictureInPicture_Enabled_Explain">If this policy is disabled, the Picture-in-Picture toggle does not appear on videos.\r
 \r
 If this policy is enabled or not configured, the Picture-in-Picture toggle is available on videos.</string>\r
+      <string id="PictureInPicture_Locked">Locked</string>\r
+      <string id="PictureInPicture_Locked_Explain">If this policy is enabled, Picture-in-Picture settings cannot be changed by the user.\r
+\r
+If this policy is disabled or not configured,Picture-in-Picture settings can be changed by the user.</string>\r
       <string id="PrimaryPassword">Primary (Master) Password</string>\r
       <string id="PrimaryPassword_Explain">If this policy is enabled, a primary password is required.\r
 \r
 
       <string id="DisabledCiphers_group">Cifrari disabilitati</string>
       <string id="EncryptedMediaExtensions_group">Encrypted Media Extensions</string>
       <string id="PDFjs_group">PDFjs</string>
+      <string id="PictureInPicture_group">Picture-in-Picture</string>
       <string id="Allow">Siti consentiti</string>
       <string id="AllowSession">Siti consentiti (solo sessione)</string>
       <string id="Block">Siti bloccati</string>
       <string id="PDFjs_EnablePermissions_Explain">Se questo criterio è abilitato, il visualizzatore PDF integrato rispetterà i permessi del documento (ad esempio, l'impedire la copia del testo).
 
 Se questo criterio è disabilitato o non configurato, i permessi del documento sono ignorati.</string>
-      <string id="PictureInPicture">Picture-in-Picture</string>
-      <string id="PictureInPicture_Explain">Se questo criterio è disabilitato, l'interruttore Picture-in-Picture non appare nei video.
+      <string id="PictureInPicture_Enabled">Abilitato</string>
+      <string id="PictureInPicture_Enabled_Explain">Se questo criterio è disabilitato, l'interruttore Picture-in-Picture non appare nei video.
 
 Se questo criterio è abilitato o non configurato, l'interruttore Picture-in-Picture è disponibile per i video.</string>
+      <string id="PictureInPicture_Locked">Bloccato</string>
+      <string id="PictureInPicture_Locked_Explain">Se questo criterio è abilitato, le impostazioni Picture-in-Picture non possono essere modificate dall'utente.
+
+Se questo criterio è disabilitato o non configurato, le impostazioni Picture-in-Picture possono essere modificate dall'utente.</string>
+
       <string id="PrimaryPassword">Password principale</string>
       <string id="PrimaryPassword_Explain">Se questo criterio è abilitato, è richiesto impostare una password principale.
 
 
       <string id="DisabledCiphers_group">停用加密演算法</string>
       <string id="EncryptedMediaExtensions_group">加密媒體擴充功能</string>
       <string id="PDFjs_group">PDFjs</string>
+      <string id="PictureInPicture_group">子母畫面</string>
       <string id="Allow">允許的網站</string>
       <string id="AllowSession">允許的網站(僅當次瀏覽階段)</string>
       <string id="Block">封鎖的網站</string>
       <string id="PDFjs_EnablePermissions_Explain">若啟用此原則,將會遵循文件權限設定(例如防止文字複製)。
 
 若停用或不設定此原則,就會忽略文件權限。</string>
-      <string id="PictureInPicture">子母畫面</string>
-      <string id="PictureInPicture_Explain">若停用此原則,將不會在影片上顯示切換進入子母畫面的按鈕。
+      <string id="PictureInPicture_Enabled">啟用</string>
+      <string id="PictureInPicture_Enabled_Explain">若停用此原則,將不會在影片上顯示切換進入子母畫面的按鈕。
 
 若啟用或不設定此原則,則會在影片上顯示子母畫面按鈕。</string>
+      <string id="PictureInPicture_Locked">鎖定</string>
+      <string id="PictureInPicture_Locked_Explain">若啟用此原則,使用者將無法更改 子母畫面 設定。
+
+若停用或不設定此原則,則允許使用者更改 子母畫面 設定。</string>
       <string id="PrimaryPassword">主控密碼</string>
       <string id="PrimaryPassword_Explain">若啟用此原則,將必須輸入主控密碼。