How to set up a group meal serving line to avoid congestion?

When a group meal serving line gets congested, it's often not because of a lack of staff, but because the flow was set up incorrectly from the start. If the staples, hot dishes, soup, utensils, and card-swiping station are all crowded at the same point, guests queue slowly, and the food further down the line is likely to get cold. When I set up a serving line, I arrange it according to the guest…