Cannot figure out how to create dropdown for Color and size choices

[Scott Hurley]

I am running VM 3.0.0  Joomla 3.3 PHP 5.4.35 on Windows 7 with Chrome Browser. Please help me figure out how to create button or dropdowns for selecting color and size choices for the products such as t shirts and accessories. I am not sure if its already a feature that came with the base install or if I need to install a plugin to the VM Component. Any Help is appreciated. Thanks