Can that be done?
You can only do it photos 1 and 3. But no longer in Photos 3.0 on High Sierra.
Either the Photos User Guide is wrong, or Photos 3.0 has a bug.
According to the User Guide (View photos, Live Photos, slideshows, and more in Photos on Mac - Apple Support) the photos should only be hidden from the moments:
Hide photos: 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
But now, they are only visible in smart albums.