Thanks for the comment.
To address the confusion, I'll call them 'Trio' when referring to collective action were all three are taking part in, and I'll refer to them by name if I'm trying to highlight individual actions taken by one of them. So, if I said 'Trio rubs their temples' then all three of them would be rubbing their temples, but if I said 'Brutus rubbed their temples' then it just Brutus rubbing his temple. I'll do this unless clearly stating otherwise in the text.
I hoped the clears things up.