An instruction apparatus that instructs a processing apparatus to perform a process includes an information acquiring unit, an apparatus-information transmitting unit, and a display. The information acquiring unit acquires information on the processing apparatus. The apparatus-information transmitting unit simultaneously transmits the information on the processing apparatus acquired by the information acquiring unit and information on the instruction apparatus to a management apparatus. Based on the information on the processing apparatus and the information on the instruction apparatus transmitted from the apparatus-information transmitting unit, an operation-screen generating unit included in the management apparatus generates an instruction-apparatus operation screen. An operation-screen transmitting unit included in the management apparatus transmits information of the instruction-apparatus operation screen to the instruction apparatus. The display displays the instruction-apparatus operation screen.