You can organize multiple images in an album.
Android
iOS
You can create an album in either way (A) or (B).
See Adding images to a newly created album (Android)/Adding images to a newly created album (iOS).
Tap (Album view) on the List screen.
Tap the [Edit] on the List screen, then tap [Add to Album].
The Album View is displayed.
The new album name is added to the album list.
After this, proceed to Adding images to an existing album (Android) / Adding images to an existing album (iOS).