Docs for TightVNC config

I would like to tweak tightVNC, as it was setup during DietPi install to be used by root. I’d like to create a non-root user (is it “adduser” or “useradd”?) and then change the TightVNC server config to allow logins from that new user (and no longer allow root logins)… I’m happy to read the documentation, but a pointer as to exactly where this is would help… I haven’t been able to identify the right source.

Outside of the dietpi.txt settings, you’ll need to edit our custom script.