1. A method of controlling an apparatus capable of generating a copy-forgery-inhibited pattern image, the method comprising: disposing dots to generate the copy-forgery-inhibited pattern image, such that the copy-forgery-inhibited pattern image includes a latent image area in which a plurality of first dots and a plurality of second dots smaller than the first dots are disposed and a background area in which a plurality of the second dots are disposed, the first dots can be reproduced when copied; displaying information related to a disposition of the first dots in the latent image area and a disposition of the second dots in the latent image area; setting a rate of the first dots that are disposed in the latent image area, or a rate of the second dots that are disposed in the latent image area, in accordance with a designation performed by a user; and disposing the first dots and the second dots in the latent image area in accordance with the setting of the rate, wherein the designation performed by the user causes the number of second dots disposed in the latent image to be increased and the number of the first dots disposed in the latent image to be decreased, so that a density of the latent image is substantially equal to a density of the background area.