Overview of working at the concert-level in MainStage

You can control the overall volume for a concert and make other changes at the concert level. You can use busses at the concert level to control concert-wide effects or to control the output of multiple channel strips assigned to the bus. You can also add channel strips at the concert level and have the concert-level channel strips available with every patch in the concert.

You can map screen controls to busses and to concert-level channel strips only at the concert level, not at the patch or set level.