How do I add tags to photos in my image library? Answered

When I uploaded photos I didn't see an option to add tags (maybe I missed it?). Now I'd like to add tags to those pictures in my image library. Is there any way to do that?

I found this forum topic from a year ago https://www.instructables.com/community/Is-it-possible-to-add-tags-to-pictures-already-in-/ but I don't seem to have the link to add keywords when I get to an image's info page.