Waiting To Be Seated - From when you speak to the hostess to being in your seat.
You have not set this timer.
Waiting For Order - How long does your order take to arrive from when you place it?
You have not set this timer.
Waiting For Bill - When sitting at a cleared table, when does your bill arrive?
You have not set this timer.
You can select which timers are shown and change notification intervals from the settings page.