In a reservation management system, a controller of an information processing apparatus of a meeting room writes that an occupied meeting room has become vacant in a timetable, and causes a display device to display the timetable, when a communication device receives information that a manager of the meeting has logged out from the information processing apparatus, and a predetermined time has elapsed after the time of the log-out, in a state where exit from the occupied meeting room has not been inputted to the operation device.