Knowledge Base visibility

I am on Zammad 3.0
I need Knowledge Base articles/categories visibility only for my verified zammad members and not to public!
Is it possible? How?

Regards

Not at the moment, no.
See this enhancement issue: https://github.com/zammad/zammad/issues/2613

i see a setting for the visibility - but the setting does not take any effect.

Could you please share a bit more information?

For whom do you expect the answer to be visible and how are you trying to view it?