The present disclosure is a method for controlling an information apparatus having a third display and being used in an information management system, the method causing a computer of the information apparatus to: display a display screen representing at least one floor plan of a building on the third display; display device icons representing target devices including a first target device and a second target device on the display screen, the device icons being movable by dragging the device icons; and when it is sensed that a device icon representing the second target device is dropped on a device icon representing the first target device, output to the information management system a first control command for displaying a confirmation screen on a first display of the first target device, the confirmation screen being for confirmation of a state of the second target device.