I don't have photos up on this machine with any pictures so I can't test it, but I'd assume you would just click on the name of the photo, maybe wait a sec and click on it again, and it would become editable? or right-click and select Rename?
That's the rub. On iOS there's nothing to click on, no name, no nada-
Harv 27" i7 iMac (10.13.6), iPhone Xs Max (12.1)
Those who can make you believe absurdities can make you commit atrocities. ~Voltaire
