Can you make photos move across the screen?

If version Pro 14 has the “keyframe” feature then you can. (Or there may even be a different way in that version.)
I can’t really navigate you to where the settings are though as I have version Pro 15 Plus and they may not be the same. As such, I wouldn’t want to give an elaborate explanation that is based on a different interface that will just confuse you.

However, if Pro 14 has the “keyframe” functions then you should find them and explore their use. Once you catch on to how they work you’ll find that they’re very versatile and handy. They will allow you to move your photo across the screen. It’s not hard to do, in fact it’s more complicated to explain it than it is to actually do it.

If your version has the "keyframes" and you discover them but are having difficulties, then submit your further questions and a more elaborate answer will be forthcoming.