In an image forming system which includes a plurality of image forming apparatuses, a server that manages the image forming apparatuses, and a client that issues a job request to the image forming apparatuses, the server has a memory for storing information which pertains to configurable functions of respective image forming apparatuses. When one of the server and client inputs a job to the image forming apparatus, and the input job is to be executed using a set of image forming apparatuses including a plurality of image forming apparatuses, a configuration required to execute the job is displayed on a display of the server or the client in association with respective image forming apparatuses in the set of image forming apparatuses on the basis of the information stored in the memory, thus allowing the user to configure functions in accordance with the display. In this way, the configurations and operations upon executing a single job using a plurality of image forming apparatuses can be facilitated.