To book a room you can email, text or call. Email firstname.lastname@example.org. Call or text to (250) 643-5039.
You can check the attached google calendar to see what rooms are available on the date(s) you are interested in. When a room has been booked it is listed on the calendar date(s) in question - i.e. Roasterside, Riverside, Libraryside or Rinkside. If a room is available for any particular date you will not see it on the calendar for that date.