An image forming apparatus includes a display, and a scanner that reads one or more originals to obtain image data of the originals and a number of the originals. A memory device stores a set of instructions, and at least one processor executes the instructions to, among other things, display a first screen including an item for accepting a designation, by a user, of an insertion position of an insertion sheet. If a designation for insertion of the insertion sheet is made, the item includes an initial value of the insertion position that is determined based on the number of the originals that have been read by the reader. The at least one processor also executes the instructions to display a second screen including information related to the insertion sheet in accordance with receiving the designation by the user via the first screen.