When multiple printing apparatuses which perform tandem printing have been decided, icons of the respective printing apparatuses are displayed on a screen and the number of print copies which has been allocated to each printing apparatus is displayed. A user can see the setting contents at a glance. When the user performs an operation of changing a size of the icons, the display of the number of print copies is changed. Depending on the size of the icons, the number of print copies is changed. In this way, the user does not need to perform operations many times for confirming and setting the tandem printing, and the user can confirm the setting in the tandem printing easily.