I am a "red light" on the signup list. What do I do? Being a red light on a signup list, means that you are on the "waiting list" for that event. In the example above, there are 24 grid slots available for that event, but 35 sign ups. Anyone after position 24 is on the waiting list. If a green light leaves the event, the first red light (nr. 25) will be promoted to a green light automatically. And everyone behind him also moves up 1 place. You don't have to do anything yourself to move from red to green.