Tokens are valid to join any chat room. You don't have to generate separate tokens for each of your rooms.You can also customize the nickame that will be used by changing the `n` parameter in the url.
These tokens can be used for other purposes, as connecting to your account with XMPP bots or clients.This feature is not documented yet, and not officially supported. So use with care.
You can use the [social_stream browser extension](https://github.com/steveseguin/social_stream#readme) to mix multiple chat source (from Peertube, Twitch, Youtube, Facebook, ...) and include their contents in your livestream.The compatibility with this plugin was added in recent versions.
In the "plugin settings" tab, there is a "{{% livechat_label use_chat %}}" checkbox.Just check or uncheck it to enable or disable the chat associated to your video.