Minimum Order Quantity for Specific Variations

Hi there,

We're using Opencart version Version 1.5.2.1 and use Openstock on many of our products, so that we can show all of our variations. However, we would like to implement a minimum order quantity on just some of those variations, not the entire product.

Is there a way of doing this? Or an extension compatible with Openstock that allows us to do this?

Thanks