1. A user interface screen creation supporting system that presents, to a screen creator, a design template for supporting creation of a user interface screen operated by an unspecified large number of guests, the user interface screen creation supporting system comprising: a guest-information acquiring unit configured to acquire guest information concerning the guests who operate the user interface screen; a template selecting unit configured to select, on the basis of the acquired guest information, out of a plurality of template groups stored in a predetermined storage region in advance, design templates that should be presented as selection candidates; and a template presenting unit configured to present the design templates selected by the template selecting unit to the screen creator.