Change Directory Structure

Hi,
first of all thanks for such a great product with gpl option… I need some help in changing the directory structure on virtualmin…

Currently when i create any domain or a subdomain for it, it creates everything into the parent domain and domains sub-directory… is it possible ot change this…

domain: test.com
virtualhost : dev.test.com, www.test.com, prod.test.com
directory structure : /virtualmin/test.com
dev : /virtualmin/test.com/vhosts/dev/
www : /virtualmin/test.com/vhosts/www/
prod : /virtualmin/test.com/vhosts/prod/

Is this possible, pls guide me