How to select a bone?

Question:  How to select a bone?

Answer:

1. Put your mouse pointer over the actor in the object field, situating it slightly downstream of the bone you wish to adjust (e.g if you want to move the elbow, click slightly below it on the forearm).  If you have trouble selecting what you want, use either of the zoom controls to move the actor closer.
2. Click to select the bone.  Its selection jack will appear and its name will become selected in the hinge group field.