If all 4 bands are playing in the same location (no tear down and set up) then you could just use different scenes. I would personally a different scene for each band. I might would even use a different scene for each song depending on how similar or different they were.
If the gear will be taken down and moved between these 4 performances, then you have 2 or 3 choices. you could keep the scene from the first performance and then plug all your inputs back to exactly the same spot for the next show. Or you could plug up the inputs any way that they happen to come to you, and then re assign the inputs under the “preamp” tab (under processing). A third option is that you could save every drum and horn as a channel under the “overview” tab. saving the channel saves the preamp level, EQ, Gate, Compressor, etc. Then you could recall that channel from the library in THAT show. If you want to use it in another show, then you must export each channel using the Setup > Memory > Library manager. This is handy if you will be working on different GLD boards because then you can take them with you on your USB flash drive.
