A peak shift/cut control program is a program for carrying out a system environment setting changeover control, and properly changes a profile in accordance with each time zone of profile B collectively managing system environment setting items. A user interface section sets time zone corresponding to each profile. A time acquire section periodically acquires system time from an internal clock section of an operating system, and transfers the system time to a profile changeover section. The profile changeover section carries out profile changeover control in accordance with time zone set by the user interface section while receiving the system time from the time acquire section.