The first scenario is that all four roommates find a place to live together. The second scenario, which you are unable to find a room together so you will need to split up. If this case occurs you may choose a two person living unit or single space if need be. That being the case, the person with the earliest time ticket for your new two person group may go in to choose your living space or when your time ticket is available as single, if necessary, you may choose your space. We encourage you to speak with your roommates and let them know your intentions.