XSD Generation

How does one set the root element for a VP generated XSD? Does the feature exist or is it something which has to be edited manually.
I am trying to walk through the entire process of creating a xml document from a Class diagram with as little manual intervention as possible after the creation of the Class diagram. Any help would be appreciated.
ie From Class Diagram -> XSD-> XML .



May I know is this same to the following post?


Best regards,
Rain Wong