Well I did some reading on the forums. If I understand it correctly, you can make your own force powers. Would it follow that you can modify an existing force power? For example;
Change force push > whirlwind > wave into push 1, 2, 3
create whirlwind 1, 2, 3
create wave 1, 2, 3
Would that work?
Edit; another solution could be create all three (push 1-3, whirlwind 1-3, and wave 1-3) and delete the original push>whirl>wave.