What she needs to do is to write up a menu, and ask people to sign up for one or two items each. In the case of main dishes, perhaps two or even three people could sign up. Or she can assign dishes to start out with. But what she’s doing is not even close to a potluck. She’s organizing a communal meal, which can be a better meal than a potluck…but she needs to understand what potluck means. It means that Shredder Guy digs into the office fridge, steals someone’s leftovers, and presents them as his contribution. Or he brings in a box of Shredded Wheat crackers. And then he proceeds to make a pig of himself.