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.
On the instance level, Peertube's administrators can choose if chat rooms are unique per video, or if there will be an unique chat room per channel.Please contact your instance's administrators for more information on how they configure the livechat plugin.
{{% livechat_label read_only %}}: you will only be able to read the chat, not write. This is useful to include the chat content in your livestream (see the [OBS documentation](/peertube-plugin-livechat/documentation/user/obs)).
{{% livechat_label use_current_theme_color %}}: if checked, your current theme colors will be added to the url, so that any user that opens the link will have the same color set.
The "{{% livechat_label share_chat_link %}}" popup can also contain a "{{% livechat_label connect_using_xmpp %}}" tab.This will only be available if your instance's administators have enabled an correctly configured this option.Using this option, you can provide a link to join the chat using any [XMPP client software](https://en.wikipedia.org/wiki/XMPP#Clients).Using such softwares can for example facilitate moderation actions.
By default, the chat is persistent.This means that the room content will be kept for a while.User joining will see messages posted before their arrival.
You can change the persistence behaviour.[Open the chat dropdown menu](/peertube-plugin-livechat/documentation/user/viewers), and click on "Configure".