A control apparatus to control a system including an image forming apparatus and a sheet discharge apparatus, the control apparatus comprising: a processor; and a memory (ROM, RAM) storing a program which, when executed by the processor, cause the control apparatus to: receive configuration information of the system, receive discharge state information for sheets discharged by the sheet discharge apparatus, wherein the discharge state information includes a discharge destination of the sheets and a stacking amount of the sheets, generate a system configuration image based on the configuration information, generate a sheet bundle image based on the discharge state information, map the sheet bundle image at the system configuration image based on the discharge destination, display, on a display, a screen in which the sheet bundle image is mapped to the system configuration image, wherein the sheet bundle image is displayed with a size corresponding to the stacking amount, and receive job identification information of a processed image forming job of sheets to be picked up, wherein, in the screen, a first sheet bundle image and a second sheet bundle image are distinguishably displayed, wherein the first sheet bundle image is a sheet bundle image which corresponds to the job identification information, wherein the second sheet bundle image is a sheet bundle image which does not correspond to the job identification information, wherein the configuration information includes identification information on the sheet discharge apparatus, wherein the sheet discharge apparatus includes a stacking tray having a sheet presence/absence detection sensor, and wherein the control apparatus is configured to update display of the sheet bundle image based on a detection result of the sheet presence/absence detection sensor, characterized in that the control apparatus is configured to map the sheet bundle image at a sheet stacking portion of the system configuration image. a processor; and a memory (ROM, RAM) storing a program which, when executed by the processor, cause the control apparatus to: receive configuration information of the system, receive discharge state information for sheets discharged by the sheet discharge apparatus, wherein the discharge state information includes a discharge destination of the sheets and a stacking amount of the sheets, generate a system configuration image based on the configuration information, generate a sheet bundle image based on the discharge state information, map the sheet bundle image at the system configuration image based on the discharge destination, display, on a display, a screen in which the sheet bundle image is mapped to the system configuration image, wherein the sheet bundle image is displayed with a size corresponding to the stacking amount, and receive job identification information of a processed image forming job of sheets to be picked up, wherein, in the screen, a first sheet bundle image and a second sheet bundle image are distinguishably displayed, wherein the first sheet bundle image is a sheet bundle image which corresponds to the job identification information, wherein the second sheet bundle image is a sheet bundle image which does not correspond to the job identification information, wherein the configuration information includes identification information on the sheet discharge apparatus, wherein the sheet discharge apparatus includes a stacking tray having a sheet presence/absence detection sensor, and wherein the control apparatus is configured to update display of the sheet bundle image based on a detection result of the sheet presence/absence detection sensor, characterized in that the control apparatus is configured to map the sheet bundle image at a sheet stacking portion of the system configuration image. receive configuration information of the system, receive discharge state information for sheets discharged by the sheet discharge apparatus, wherein the discharge state information includes a discharge destination of the sheets and a stacking amount of the sheets, generate a system configuration image based on the configuration information, generate a sheet bundle image based on the discharge state information, map the sheet bundle image at the system configuration image based on the discharge destination, display, on a display, a screen in which the sheet bundle image is mapped to the system configuration image, wherein the sheet bundle image is displayed with a size corresponding to the stacking amount, and receive job identification information of a processed image forming job of sheets to be picked up, wherein, in the screen, a first sheet bundle image and a second sheet bundle image are distinguishably displayed, wherein the first sheet bundle image is a sheet bundle image which corresponds to the job identification information, wherein the second sheet bundle image is a sheet bundle image which does not correspond to the job identification information, wherein the configuration information includes identification information on the sheet discharge apparatus, wherein the sheet discharge apparatus includes a stacking tray having a sheet presence/absence detection sensor, and wherein the control apparatus is configured to update display of the sheet bundle image based on a detection result of the sheet presence/absence detection sensor, characterized in that the control apparatus is configured to map the sheet bundle image at a sheet stacking portion of the system configuration image.