Switch To Pose Mode: Use button to select character rig and switch to pose mode. If rig is hidden, button unhides the character rig.
Show Animation Rig: Show or Hide the characters animation Rig.
Preserve Volume: Toggle ON or OFF the Preserve Volume option on Armature Modifier for all objects.
Corrective Smooth: Toggle ON or OFF the viewport and render display of Smooth Corrective for all objects with the Modifier.