This video walks through how to configure Slack with the Teleport Approval Workflow. Once you have completed this tutorial you will be able to :

• Configure Teleport roles to allow requesting access to other roles (Ex: a developer role can request temporary access to production)
• Setup integration between Teleport and Slack
• Set a Slack channel to receive and respond to role access requests

More detailed instructions are available in the Teleport Admin Guide
https://gravitational.com/teleport/docs/enterprise/workflow/ssh_approval_slack/