Hide albums for users in Photo Station 6

[Onehanded]

I'm trying to setup my Photo Station for several users with different access.
My station setup first: TS-231P with Firmware 4.5.2.1594, Photo Station 6

My configuration:
different folders for Files -> "Multimedia" for Family, Multimedia2 for "external", "privatMedia" only for admin

• Admin (me) - allowed to see all folders and pictures/albums

• Wife - allowed to see several folders and albums from all sources

• Family - allowed to see several folders and albums from all sources

• External - allowed to see folder only from second source "external"

Everyone has different rights for the different folders.
Wife/Family has RO for "Multimedia" and RO for "Multimedia2", External RO for "Multimedia2" and denied for all others.

So far so good - when I login with an external account for example and selecting management --> shared pictures, I can only see the images in this folder.
But if I create an album somewhere else, e.g. as admin within my "privateMedia", this album is visible for everyone when choosing "management -> albums".
There is no effect when changing the rights within the albums, no difference for normal or smart album, no setup in the user rights.

How do I create an album that is only visible for some users with the correct rights?