Hi,
I am sorry but i still don't understand your question.
Are you familiar with Modules and Joomla? Because as far as i understood, what you are asking is not related to our template, but directly related to joomla itself.
Simply,
1- Open the Module (VM Featured Product module, or any other 3rd party module)
2- Choose a module position (see the available module positions here:
flexiblewebdesign.com/virtuemart-2-template-darkmart/index.php?option=com_content&view=article&id=77&Itemid=533)
3- Choose the "menu items" where you want to show this module (for instance select your homepage menu item to show this module in the homepage.. or select "show all pages" options to show the module in all pages.)
4- Publish the module.
The module will show off in the menu items that you have selected.
Regards.
Support & Development.