For a template selling website created using joomla+virtuemart, build a custom page where special type of users (Authors) designated by me, can see after the login in the frontend, their sales. In the backend I should be able to asign this Template Author status to certain users, view statistics with the sales made by Template Authors (columns: number, user, total sales), reset statistics easily whenever I wish to for certain Authors or for all Authors. This custom front page should be located in the user module near Account Maintenance and Download Area, and will be available ONLY to this kind of users "Template Authors". I need full instructions on how to add the changes to db, all the files, testing and clear instructions on how to add extra code to this custom page. Full testing will be carried out.