Use OR conditions for library restrictions

I would like to be able to use OR conditions when applying rating/label restrictions for users.

I use library restrictions to curate what appears on the family area TV.

My starting position for this is the content rating (eg U + Uc for UK ratings). But there are some PGs I’m OK with them having access to. I can manually label these, and add that label, but then I would have to add that label to the U & Uc content as well, and the label restrictions get applied as an AND condition.

What would work better is if I could set it up so it uses Content Rating IN (U,Uc) OR Label = Childrens

To get around this at the moment, I apply a custom content rating to the films I want to allow (PGc), but hate messing up the metadata like this.

Have you tried to define them as a white list, instead of a black list?