Photos
Yours first, the examples beside them, and nothing from elsewhere until you say it is yours.
Under Your page → Photographs there are two tabs: Your photos and Examples, photos from our library on your trade’s subjects.
The ones waiting for you
Photos that came from Google or from your old website appear at the top, waiting. For each one you confirm whether it is yours and whether you want to use it. Until then they do not appear on the page, and the page cannot be published with them.
Adding your own
Upload photos from your phone or computer. Every photo field, in the editor and in the menu, picks from this library, and the library says where each one is being used.