Skeleton Animation Manual

 Make Animation

Making animation clips on skinned-mesh with Skele is the same as you make animation on non-skinned meshes;

Enable the bone-editor and Animation view, and manipulate the joints as you like, the modification will be recorded as keyframes in Animation view.

If you're not familiar of how to use Animation View, the official tutorials could be very helpful to get you started with this topics

https://unity3d.com/learn/tutorials/modules/beginner/animation/animation-view?playlist=17099