Slideshow in Photos: how to split combined images
I'm working on a slideshow in Mac Photos. When I add new photos, the randomness of how Photos combines or doesn't combine two photos/slides into one screen on the slideshow is perplexing. And I can't seem to figure out how to manually combine two individual slides into one combo or take a combo and split into two individual slides.
Any ideas on how to control this manually?
(I've read that you can't control this, but certainly there must be some way... the theme isn't applying any clear logic to this, so it's not a pattern that is baked into the theme itself)
I'm using the latest Photos on Catalina with the Vintage Photos theme. I have about 74 images at the moment.
Thanks!