Click a moment, collection or year to see the photos in it.
On a trackpad, you can pinch open or closed on the moment, collection, or year to change views.
View information associated with a photo: Click the Info button on your Mac, double-click a Live Photo thumbnail.
To play the Live Photo, press Space bar or position the pointer over the Live Photo badge.
Tip: You can also position the pointer over a Live Photo thumbnail to play it.
If you have a Force Touch trackpad, you can on your Mac, click Photos in the sidebar.
Select the photo or photos, choose Image > Hide [number] Photos, then click Hide Photos.
The selected photos disappear from your moments but are not deleted.
To show hidden photos, choose View > Show Hidden Photo Album. The Hidden album appears among your other albums. To unhide photos in it, select them, then choose Image > Unhide [number] Photos.
Tip: You can use keyboard shortcuts to quickly do many common tasks in Photos. For a list of all the shortcuts you can use, see Find photos by text, content or date in Photos on Mac