Notifications are currently not enabled.
Notifications can help you not miss important announcements in tournaments you play.
At the moment, they only work on your dashboard! If you have notifications enabled and an open dashboard (it does not need to be focused, you can do anything you want on your device), your browser will send a notification to your device everytime a new round starts.
To disable notifications check your browser's documentation, they all have their individual notification settings.
Support for sitewide notifications that don't require the opened page is planned for the future.