It is possible optionally specify a minimum allowed subtotal for a cart to proceed to checkout at general cart settings.
I'd like to specify an expected minimum item number (total number of products - or total number of products by product type) in cart to let customer to checkout instead of an expected amount of money.
For example: a customer want to buy 10 items, but she cant, becouse she has to order minimum 12 items.
How could I do it?
I tried to use Conditional Actions but there is no trigger like "customer starts checkout".