One of the local clubs I shoot at only has 1 bay (very small club). We setup a stage, break up into 2 squads, everybody shoots the stage, then we modify the stage. Typically, we set it up with the hardest stage 1st (the stage with the most walls, props, etc.) then remove pieces of the 1st stage for the 2nd stage, and then remove pieces of the 2nd stage for the 3rd, etc. So, when we get done, there is very little left to tear down.