With FamilyAlbum Premium, you can create custom Share Groups and make a photo/video only viewable by members of a Share Group.
*Only Album Admins (parent members) can view and change visibility settings.
For information on FamilyAlbum Premium, please check the link below.
FamilyAlbum Premium
https://family-album.com/premium
To create a new Share Group, tap the up arrow button on the Add screen and tap "+ Create Share Groups".