how to combine faces albums
I'm up to date with El Capitan/Photos. I'm trying to combine face albums in "faces." In the old iPhoto, I used to be able to drag one face on top of the other, and it would combine them. For example. I had my son named Mike and identified faces of him. Fast forward and I started naming him Michael. Now I have two "folders" or "albums" - of him. One named Mike and one named Michael. In the new Photos, I can't figure out how to combine them.
MacBook, Mac OS X (10.6.4)