In the search bar on the "Home" page, use the dropdown calendars to select your check-in and checkout dates.
Your check-in date is the date you arrive at the hotel and your checkout date is the date that you leave. Most hotels require you to check in in the afternoon and check out in the mid to late morning.
For event-specific destinations, Roost restricts the available check-in and checkout dates to several days before and after the event. This is to ensure you'll have enough compatible roommates to choose from.