To access an EventBridge Schema Registry, you should obtain the proper credentials from your administrator.  In particular you'll need to know your Access Key, Secret Access Key, and the Region for the instance.

Give a meaningful name to the connection:

Then go to the Authentication tab, and paste the Access Key ID received from your administrator, and Secret Access Key for your IAM.  Finally, select the appropriate region where your AWS Glue Data Catalog is located.

If you wish to handle AWS authentication through the credentials file, you may leave blank the Access Key ID and Secret Access Key fields, knowing that Hackolade supplies credentials following the recommendations described here.