My Cloud Home - Plex and family share

I have the new WD MY CLOUD HOME and have installed Plex. I have 4 adults in my home and I’d like to give them all access to movies and photos. Plex seemed like the obvious choice however, it appears that as the administrator im the only person that can see the Plex server.

Am I doing something wrong, is there a work-around or is this due in an update?

Oh and I realise I can share an email link to any folder but its not permanent which means they will have to keep using a link for all drives.

I didn’t appreciate it had so many limitations when I purchased it a few days ago.