The way the ballot is drawn, if you limit your availability on your ballot application you will limit your chances of success. So to maximise everyone’s chances Ballot Buddy assumes you are available to play at any time on any day that you register.  However, I still suggest you register the day on which your time is limited, but submit your group ballot application without any time limitations attached. If you are successful in the ballot and are offered a time which happens to be within your play window, then everyone wins. If you are successful but the time offered is outside your play window then your Ballot Buddies still get to play, even if you are not available. This is the fairest way to give most people the best chance of success.