Optimizing the Skeleton

Once your character is rigged and assembled, you can modify the deformation chain’s position and shape in the Camera view by using the Setup Mode to optimize it.

You can also modify the area which will be influenced by the deformer by setting up the zones of influence.

You can modify the chains and zones of influence as you create each of them, but it can also be done at any time.

Related Topics 

Setting Up The Resting Position
Zones of Influence