An information processing apparatus capable of realizing setting of an insert including an interleaf sheet and a chapter sheet, on an image forming apparatus, by an intuitive operation similar to an actual insertion operation. An operation terminal includes a touch screen display and a network communication section which communicates with an MFP, and is capable of performing an operation on the MFP concerning document printing, and setting an insert to a printed matter to be printed by the MFP. When a user's drag operation causes insertion of an insert image displayed on the touch screen display between adjacent preview images of pages of the printed matter displayed on the same, the insert image is set as an interleaf sheet, and when the operation causes superimposing of the insert image on a preview image, the insert image is set as a chapter sheet.