Re post #2: You can't parent things to a group, only to an actor or prop. I assume you mean follow the jaw when the mouth opens. FyreSpiryt's sugestion sounds like the way to go, probably the only way. One problem, there are usually a number of head morphs that move the jaw, in addition to OpenLips many of the phoneme morphs will move the jaw, you might need a seperate prop morph for each.