I'm a rabid note taker so my suggestion is a bullet point outline.

3 POV's; have they been aware of each other going into it, does one personality like one over the other, what are they fighting about, are all of them going to be speaking or is one just observing, is there a narrator/mediator or is it an all out chaos of voices, what do they hope to accomplish at the end of it...

and those are just things I'm curious about