Just do what the intructors tell you to do. To be honest, there's only a couple of areas youre gonna be working on. Youll work from the standing position(which includes all the techniques you want in your grappling game. Like your shots, tie ups, head clears, throws, headlocks,etc.), the four points position, top, and bottom. If you want to specifically work on your leg attacks(like doubles, singles) or anything else, do it after class or something... Dont try to "interupt" everyone else just so you can work on something that YOU want to do. Like Jubaji had said, though in a demeaning and
way, just wrestle. But then again, there's no reason why you couldnt work extra on a certain techniques as long as you did everything they asked of you.