Multiple Eval instances in the same Tenant/Sub

What files/parameters need to be modified so that my team can deploy multiple instances of an Eval HCI cluster in a single tenant/sub? My team has a need to have an HCI instance for each dev to work independently. Since each HCI instance will create app registrations, when using the guided eval to create the instance it does not have the flexibility to change the name of the cluster and therefor the app registrations.

Is there a way for us to edit scripts that get run to provide the uniqueness?