This scenario is ideal for three to four gangs, but by making the setup larger can accommodate as many as six (although that would certainly be a tight fit). Ideally, the arbitrator should have the gangs split themselves into teams of three to four gangs and then run the scenario for each of them in succession. This means that the arbitrator should be running the scenario 1-3 times (or even more for larger campaigns). Since a gang must have its members pass through the bottleneck on the opposite side of the table in this scenario to continue in the campaign, gangs who are forced to withdraw may have to make the attempt again, perhaps joining the next wave of gangs attempting the run.