The “Lock” icon will lock and unlock the zone in the layout:

Click on the lock icon to lock or unlock the layer. When a layer is locked it cannot be moved or resized in the layout unless it is unlocked.
The “Lock” icon will lock and unlock the zone in the layout:

Click on the lock icon to lock or unlock the layer. When a layer is locked it cannot be moved or resized in the layout unless it is unlocked.