A setting device for setting allocation information of a setting item allocated in a setting screen of a device driver, the setting screen being adapted for altering a controlling condition of a target device. At an administrator terminal, allocation information setting application is activated upon execution of allocation information setting program. In a setting item edit screen displayed in a monitor, a list of setting items displayed at an allocated setting item display area or an unallocated setting item display area is dragged and dropped in a setting screen displayed at setting screen display area, whereupon the dragged setting item is allocated in currently displayed setting screen.