How to Rig Cycle Layered Arms and Make Draggable?

Hi, I have cycle layered arms and wish to make arms draggable. Since there are multiple images, how do I rig it to prevent odd warping and make it draggable in the hands? Do I rig bones for each artwork layer and apply draggable handle for each or just rig one? Please help! Each folder within "Right Arm" and "Left Arm" is a Swap Set. Default is "Arm Rest".

*Update: I fixed the warping by making each swap set folder Independent, crowned. Also, I had to bone the swap set folder according to last arm position.