Minimum Order

Hi,

I have a sausage roll company – I have set up a basic woo commerce page.
However our minimum order is 16 sausage rolls per 1 cool box.

I have noticed on other similar pages that there is a page where they select the 16 flavours from a drop down box to fill the cool box.

I have used a min/max plug in but it not what im after.

Any suggestions?
I’m new to this so simpler the better please ??

Thank you in advance.