At our church, our worship leader is fixated on two things: a Bose L1 system and in ear monitors. I think I'm going to be asked to make it all work together...won't be the first time.

My issue is that I can't figure out the reason to use in ear monitors and a Bose L1 system at the same time???

That said, I've never used in ear monitors. So I don't know much about them.