createEmptyMovieClip options


I am using a createEmptyMovieClip to draw some dynamic round chart (circle chart (?) - i don’t know the exact name).
After some unsuccessful test to create the empty MC inside another MC, I found somewhere that createEmptyMovieClip can only be used on _level0. Is there a way then to link it to my MC or to put it inside (so that it moves with, it is scaled with and is on the same Z axis coordinate as my MC) ?
Or at least is it possible to put it inside a layer so that I can easily move things in front of it and behind it ?

Thanks for any help,