Test Bone Deformation
Here you can quickly test your skinning by rotating bones without leaving the SkinModifier.
After releasing the AmountSpinner, the Bone will jump back to its original rotation.

Rotate Bone: Choose current/parent/child Bone
Axis: Choose rotation axis (local)
Amount: Amount of rotation
Set as Key: Set a key at the current frame with the value of the AmountSpinner
Delete: Delete Animationkeys
Playback: Animation Playback Controls