Add/replace image in Keynote 9.1 (6369) from outside Photos or Movies I am working in Keynote 9.1 (6369). 

Apple support shows one can drag-and-drop in an image. But is there really no more direct way to, having clicked on the photo icon in the bottom-right corner of the media placeholder, navigate outside of the Photos or Movies directories? That seems astounding. 

Can I set the list of directories from which Keynote allows me to choose images? Or is there a setting to navigate via Finder instead of the default UI for choosing? 

If this behavior is improved in the more recent versions of Keynote, that might be close to a reason to upgrade my OS.
In Keynote 9.2.1, if you can't find the image you're looking for in the built-in pop-up, you can simply drag and drop an image file from Finder into your slide. 

I believe this feature is available in all versions of Keynote.