Currently, there is no way to leave the Novice Network by yourself, unless you get kicked by a mentor, which is a poor design. They don't let mentees decline Novice Network invites and don't let them leave either. Please change this, SE.

Also, someone mentioned getting kicked by going afk. Unfortunately, afk kicking only applies to mentors and not mentees, since there are way too many mentors compared to mentees.

Anyway, if the mentors don't kick you out or if someone re-invites you back, you can hide the Novice Network through the following method.

At the bottom right of your chat tab, you will see a gear.


Click it and it brings you to character configuration > log window settings > general.
Under Log Filters, click on general, which should be numbered 1 by default.


This brings up the log filters > chat settings tab. Scroll down and you will find Novice Networks. Just uncheck that and click apply.


By doing this, even if you are in the Novice Network, you won't be able to see any chat.