Animating parts of the object

How to animate multiple parts of the object together? For example walking animation for legs and firing animation for hands.
p.s. Sorry For My Bad English.

You can blend animations partially using the following:

• You can set a StartBone for the AnimationState, which means the animation will only be applied from that bone onward in the hierarchy (easiest)
• You can control AnimationState blend weights per bone (harder, but more precise control)
• Finally using the AnimationState Layer setting you can control the order the animations get blended in. Higher layers = blended later, which means they will have higher priority in case of conflicts.

thank you