1. An apparatus comprising: a first setting unit configured to set an image reference point to be a reference point of arrangement for each image in a case where one or more images are arranged in an image arrangement region; a second setting unit configured to set a same or more number of arrangement reference points to be reference points than a number of images to be arranged, in a case where a region where the image reference point can be disposed is set in the image arrangement region; an association unit configured to associate each image with a arrangement reference point set by the second setting unit; a first determination unit configured to determine a region where the image reference point of the image associated with an arrangement reference point can be disposed based on a size in a case where the image is arranged in the image arrangement region and a position of the arrangement reference point associated with the image by the association unit; and an arrangement unit configured to arrange the image in the image arrangement region by disposing the image reference point in a region, determined by the first determination unit, where the image reference point can be disposed.