
Victor L. answered 08/30/19
Experienced technical advisor
It depends where your photos are located.
if within the photos app, select your pictures and click on the Image menu in the Photos menu bar and choose Hide [number of] Photos, or press Command-L.
This will place your images in a special album called “Hidden,” which is, itself, hidden by default. To show or re-hide the Hidden Photo Album, look for that option under Photos’ View menu.