Add a full page image / advertisement

We would like a page to announce upcoming events. The page would just be a part of the rotation.

I’d like to be able to add an advertisement slide, like the scroll feature but it would be a full page ad for an event, special or new beer announcement etc.
Wouldn’t need to be complicated, just allowing a custom uploaded background image that it could scroll to would work.
Would also prevent screen burn in of the tap list.