permissions are set on the share level so even if they went directly to pictures they could still go to a higher level folder and see everything
smartware is really intended for backups and not a working area
i suggest creating a share for pictures and copy the pictures to this share, then you have full control, then just periodicaly update the pictures.
I actually have a pictures, movies & music shares in addition to the users and smartware
I have a small script that runs daily to update files in the other shares and smartware constantly updates. this means I actually have 3 copies of most files. PC, mycloud working area and smartware. If I was low on space i would just get ride of the smartware backups as I don’t really need them