Can't manually colorize directly from Apple Photos

I am using Photos Revive on a MacBook and I am launching directly from Apple Photos > Edit (as an extension). The automatic colorisation works fine, but I can’t find a way to access the Photos Revive menu from within the Apple Photos app (as you can with other extensions). I want to be able to save a manually colorised photo directly back into my Photos.Photoslibrary, and I can’t. It doesn’t seem to work the same way as my other Photos App Extensions.