I like to make diagrams using paper and pen, creating an input list including the channels the microphones/DIs, sends to FX, the monitors and how many XLR lines. If it’s going to be recorded, I set up my session in Pro Tools to save some time also. This way, when the day comes, I’m as ready as possible. I always make changes, but that’s part of a live show. These diagrams save me some time and unnecessary surprises.