1. A non-transitory computer-readable storage medium having a computer program stored thereon and readable by a computer of a communication apparatus connected to a network including a plurality of image processing apparatuses, the computer program, when executed by the computer, causing the communication apparatus to perform operations comprising: searching the plurality of image processing apparatuses in the network; obtaining processing information being related to execution of image processing configured to be executed by each of the plurality of image processing apparatuses and is prepared for each of the plurality of image processing apparatuses; determining a plurality of executable image processing, which can be executed by the plurality of searched image processing apparatuses, by using the processing information, the plurality of executable image processing including complex processing that is configured to be executed by a first image processing apparatus configured to execute first image processing and a second image processing apparatus configured to execute second image processing by using data obtained by executing the first image processing; and displaying support information, which is for selecting an image processing from the plurality of executable image processing, on a display unit of the communication apparatus.