I’m sorry. I probably don’t understand what exactly you’re trying to achieve 
So you want to control an indefinite number of pawns at the same time? Wouldn’t that mean that all pawns get the same input and would keep their relative positions to each other anyway?
What’s the difference to attaching the pawns/actors to the character and just control the character? Or by “control” do you mean something different than movement? Because I don’t see how the character ever leaves the trigger box if you control them at the same time.
Again, sorry about all the questions. Just trying to understand a little bit better what you’re trying to do exactly.