Party Targeting as a Healer

Hey all,

I recently came back and was playing some SS. I have a macro (that no longer works) that would put me on the bottom and force player 1 to be on top and player 2 in the middle. Currently, I am always on top now and player 1 is occasionally on the bottom, and vice versa for player 2. Are there any addons or new macros I can use? I don't want to keep asking people to give me lead to fix it.

Any help would be great!