Goto Clients menu item and click on Create
Enter your Client ID (this is the Service Provider ID of the application - in this case https://slack.com) and choose Client Protocol (openid-connect) then click Save
Go into your Client Settings panel for https://slack.com
Go into your Client Scopes panel for https://slack.com
Your Haventec IAM SAML Client is not configured, you need to generate the IdP Entity ID XML configuration data ready for Slack configuration
Note: This page contains everything you need for the Slack SAML configuration pages.