Slack integrations are stored at the organization level. Admins can configure alerts to be sent from slack. From the dash, select an app, then proceed to Settings - Notifications. You then can set up your slack integration on this page. If there is already a slack connected, then you'll see the info for that integration, including team name and channels.
Note: We currently do not support sending alerts to specific slack groups. If this is of interest to you, please let us know at support@embrace.io.