I think I get it. It took so long to understand how Events worked in iPhotos. It was not intuitive. I was used to Windows and "Albums." Then I couldn't figure out Photos. I get it now, Events are now "Albums." I need a basic tutorial on the new Photos, lol. I looked at my "Flagged" photos, but couldn't find where to unflag them. Even the "Help" doesn't know the term "Flag." If I drag a photo from Recent Imports into an Event/Album, does it stay there or is it a copy going in there and the photo can be in other Event/Albums simultaneously?