A non-transitory computer-readable storage medium storing a control program causing a computer to execute a control method for an image forming apparatus, the control method comprising:
- generating a changing job to change sheet information set on a sheet cassette, wherein in the generated changing job, a targeted sheet cassette, of which the set sheet information is to be changed, and sheet information to be newly set after the change are designated;
- setting a timing of executing the changing job based on a designation of a user;
- and
- executing the changing job at the set timing,
- wherein executing the changing job includes opening the targeted sheet cassette designated in the changing job and changing, when it is detected that the opened targeted sheet cassette is closed, the sheet information set on the targeted sheet cassette to the to-be-newly-set sheet information designated in the changing job.