Part two in the answer to this post describes exactly what I want to achieve for the shoulder deformation but it doesn't explain how to do it:
I downloaded the example Sintel rig and I can't find which controller is being moved to achieve movement of both the arm and the shoulder. It's quite a complex rig and I want to keep mine as simple as possible.
I see somebody else asked the same question here but with no solid solution -
Shoulder Movement following the arm
Any other suggestions on how to achieve this?
Thanks