Basically, Lyrra, here is why there are no buttocks groups (gleaned from what little I've managed to get CL & co to tell): Q: Why are there no buttock groups? A: There are rigging enhancements in Poser 6 which make these unnecessary. Q: Really? What exactly do these enhancements include? A: If you select the hands, you will see new dials that make posing the fingers easier. There are similar dials on the feet. Conclusion: rolls eyes In Curious Labs defense, they have put out an open call for ideas on how to improve Poser's rigging system (software-wise, not content-wise), but I have yet to get a straight, satisfactory answer on the reason behind the step backwards in rigging in the P6 figures. Oh, wait, the two types of rigging were compared to "the Mac vs PC thing", which I will not dignify with a response.