Most of these settings only need to be configured if using your own IAM, if using Haventec IAM, these will be auto-provisioned.
If using your own IAM, these must be copied from your IAM into these fields in your Application.
For Admin username/password, you will need to create an Admin service account in your IAM.
However, for Haventec IAM, you will also need to set the Valid Domain list. This must point to your applications domain - it is the main landing page of your application that the IAM is allowed to redirect to upon completion of authentication.
It must be of the form: