To remove Dock:
Go to your Slack App Settings (at slack.com/apps).
Search for Dock by BackOps.
Click the app, then select “Configuration” → “Remove App” at the bottom of the page.
Note: If your admin removes Dock from your Slack workspace, you may lose access to key features. To continue using Dock with full functionality, please ask your admin to reinstall the app for your workspace.
To reinstall Dock:
Use your team’s Dock install link or contact support for the latest one.
Follow the installation steps again and reauthorize the app.