It is possible to send notifications about certain events directly to your Slack workspace so you can immediately see all the changes.

Notifications are configured by Trackers and Repositories. If you want to get notifications about Bugs you have to set up a Slack channel for the Bugs

Also if you want to be notified about a Repository's Pull Requests, then you need to set up a Slack channel for that specific Repository. However these channels can be the same.

The only restriction about these channels that they need to be public Slack channels.

Please keep in mind that because of a change in Slack, the integration Slack app has to be added the Slack channel to be able to send notification messages to that channel.