Convert a category to private and add users to a specific group with access

Worked perfectly, I forgot you could add multiple usernames to the UI :slight_smile:

For others, to export the psql query result simply run:

psql
\o /home/discourse/output.txt
<your query here>
\o
exit

Now in /home/discourse/output.txt you will have the result of the query as it would be printed on screen.