A reservation management unit 24 acquires a joblog of a job that has been performed in a predetermined period, extracts as a specific job among jobs recorded in the joblog a job that the user is not a user having a predetermined relationship with the reservation user, derives a reservation timing on the basis of a time-wise distribution of the performing time point of the specific job, and performs a reservation of a print job of the reservation user to be performed at the derived reservation timing. Here, the user having a predetermined relationship with the reservation user is a user who belongs to a user group to which the reservation user belongs and the user group is a user group of users who work physically contiguously to each other.