An application reception unit receives, via a first terminal, an authority application, an approval confirmation unit confirms to a second terminal whether to approve the authority application, an authority management unit that manages an authority to the first terminal, the authority management unit is to, when the authority application is approved, give an authority to the first terminal, a control management unit, when an authority to apply to the first terminal is given, changes an elevator operation setting based on the authority application, a traffic volume calculating unit refers to an elevator operation setting database storing operation setting information indicating a setting related to operation for each elevator and calculates a traffic volume for each elevator, a charge amount calculating unit calculates a charge amount for each of the applicants, and a presentation information generating unit outputs the presentation information to the first terminal or the second terminal.