Menu → Preferences → Streams and enable it.Team StreamWatching StreamSubscription IssueTeam Stream allows you to get the teams you belong to on GitHub and handle issues where they are mentioned. When you join a new team, the team will be added automatically.Watching Stream can retrieve repositories that you have watched on GitHub and handle issues in those repositories. When you watch a new repository, it will automatically add it to your repository.Subscription Stream provides the ability to handle individually registered issues. Register the URL of the issue from the Subscription Stream menu.