Edit Subdomain

Clicking the Edit control to the right of a domain will allow you to change the settings for that domain.

This will will provide a pre-populated form.  If you click on the first domain in the set of domains, the form will include all of the dataset configuration fields, including URL Pruning and Rotation Schedule.  If you click on any of the other domains, it will include only the fields editable for that domain itself, but none for the dataset in general.