If you do not intent to complete, do not sign up, please. IV priority, no elitist, no rage, no impatient. Roll call sending out the morning of the day, cancel as soon as possible or in the future you won't be counted on.
The game creator, blue6dIMension, should send out invites 5-10 minutes before start time. If you don't receive invites, the creator may have left so start inviting each other through xbox/psn/pc on your own.