Randomise Recent / featured products on home page

Hi

We are using a Woocommerce theme and in the theme options for the home page you are able to set the number of products to show (featured entries). What we would like to know is how can we make these products random in order and in what is seen

We are using…
WOOTIQUE 1.4.2
FRAMEWORK 5.4.1

http://wordpress.org/extend/plugins/woocommerce/