Abstract: A server (10) is connected to a terminal (13) for an operator and a terminal (12) for a manager through a network (14), receives operation situation data representing the operation situation of the terminal (13) transmitted from the terminal (13) together with the seat ID, creates display data for displaying an image of the seat layout representing the operation situation different with the type of the received operation situation data according to the seat ID from the layout data read out of a storage unit (120) of the server (10), and transmits the display data to the terminal (12).