The ability to do a sign up that allows ppl to take slots (like a pot luck). You set the what are they gonna bring slots. Parents can sign up to take a slot. No cost involved. For instance, we do a food table at every competition and use sign up genius to organize who's bringing water, chips, veggies, fruit, plates, etc. so 30 ppl don't all decide to bring plates that we now don't have food to put on.