I guess it's a common problem for begginers but I couldn't find any solution yet.
The problem is that I can't "Lock" by biped for a sequence of frames, I'll explain.
For example, for a normal object, if I want it to start moving in frame 30 all I need to do is lock its position on frame 30 and on frame 40 (for example) move it to where I like (auto key on).
I found it a little problematic when working with biped. I want the entire biped to stay still in frames x->y then in frame y I select the entire biped and add a key but it doesn't work, some bones will start moving before frame y.
Any solution? Thanks a lot.