When you want (need) to feed everyone...
Sometimes you are having people over. Sometimes people are simply coming and there will be twelve of them. These are the recipes for both: big batches that scale without falling apart, long cooks that mostly look after themselves, and food that is better made a day ahead than an hour before. Nothing here asks you to be at the stove when everyone arrives.
If you want the method rather than the recipes — how much food, how to assign the lanes, and the timeline written backwards from when you want to eat — that is Cooking for a crowd.