An information management method in a control system that collects log information regarding usage of a plurality of devices, the information management method including: a step of receiving judgment information indicating whether or not the log information is to be provided to a service operator from each of the plurality of devices; and a step of providing a command for causing a first image, which represents a device indicated by the judgment information as a device that provides the log information to a service operator, and a second image, which represents a device indicated by the judgment information as a device that does not provide the log information to a service operator, to be displayed in display modes that differ from each other to a display device associated with the identifier in response to an access by the display device.