Parent Sites
Customers under Assets allows Parent Customer to be set when creating or editing a Site. Existing Parent Customers are listed within the Parent Customer drop-down, to add a new Parent Customer, create a new Customer and after saving the next time a new customer is created it will appear for selection in the drop-down list.
To add a Parent Site to an existing Site select the row then 'Edit' and then select a Parent Site from the 'Parent Site' drop-down list.