is it possible to record inputs at a level and NOT have them come out of the PA at that level? For example, I have four horns, drums, acoustic guitar and two vocals. Can I record the whole set up but only put the vocals and guitar through the PA? On a traditional board, you would bus them together and send them to the recorder and then turn them down in the main output but I can't find a way to do that on this board. Any suggestions?