Casino Owners hate open seats, Poker Players hate it the most! Especially when there is a list. Part of running your game well is having Players seated at all times, this includes lobbying Players too. If you have two or more lobbying Players I would give it 3 minutes from when the last Player left before calling all lobbying Players back to the game. Open seats need to be offered to other Players immediately as a seat change however offering a seat change in the middle of a hand is a bad idea, Players are to caught up with the action to hear the offering of the seat, wait until you push the pot to the winner before making the announcement “would anyone like to move seats before I lock it for a new Player?”.