Many modellers put toe groups into shoes, which is fine, it won't hurt; but the fact is, you don't need them. You never need the last group in the chain - my Flo Hair is entirely grouped to the neck, for example. The head and chest bends are taken care of by the way Poser does the joints. The advantage of doing it this way is that it makes things simpler, and morph making is easier too because you don't have to worry about morphing multiple groups. If you "borrow" a CR2 from some existing shoes, as I suggested, you probably won't have to do much joint adjustment. If there are problems, post a thread (in the Poser forum is probably best) and someone will advise you.