Many St. Louis County Library branches feature study rooms. These rooms accommodate small groups of individuals in a quiet, enclosed space. Patrons wishing to use the Study Rooms should ask library staff. Study Rooms may not be reserved in advance and are available on a first come, first served basis. Patrons are allowed an hour, which may be extended if there is no wait. If one person is using the room to host a series of meetings with students, clients, or others, the room must be signed out to the host, and not the attendees. The host will be allowed an hour which may be extended if no other parties are waiting to use the room. For patron convenience, St. Louis County Library employs a pager system to notify patrons when their room is ready, and also when the allotted time in the room has expired.