New Slack Channel Management

You can now manage the Slack channels you are tracking activities in directly from the integration settings page.
If you head to Settings > Integrations
 and click on your Slack integration, you'll now see a new Manage Slack Channels
 section.
All of the channels that you are currently
 tracking activity in will be listed. You can edit these by clicking on the dropdown.
In the dropdown you can select, or de-select channels, and also search for specific channels if you have a very, very long list.
Note: If you do not see this functionality on your Slack integration, you will need to upgrade the permissions by clicking on 'Re-connect Slack'.