Already answered
http://www.chiefdelphi.com/forums/sh...t=88812&page=2
1. Select one of the bones.
2. Click the 'Motion' Tab.
3. Expand the 'Layer Manager' rollout.
4. Click and hold the 'Add Layer' button (next to the 'X' button).
5. Point to the first option and release, a new 'Animation Layer' is added.
6. Click the 'Setup/Animation Mode Toggle' button.
7. Start creating keyframes for the spline helpers (like 'CTRL_Head').