spelth on "User in multiple groups"

Hi guys,

i'm using zenphoto for more than 3 years now, great work, exactly what i was looking for (using ext-sources & groups).

I have a question regarding groups:
Is it possible to assign two or more groups to one user?
--> user sister in group friends AND group family.

I tried several ways to achieve this, but no luck.

If it is not possible, is it planned to implement this feature in future releases? - this would be great!

Thanks in advance,
Luke