Its not straightforward.
Adapting the priviliges is a bit cumbersome, isnt it for a first install?
Result is a white page where all categories are missing, but no login.
There is a plugin that is not whitelisted - cannot install
I did npm install nodebb-plugin-private-forum
https://github.com/LM1LC3N7/nodebb-plugin-private-forum is not maintained any more
This plugn does not appear to do anything more than what I already did with disabling categories.
No redirect to login page for visitors