I need a woocommerce specialist, who can add following function to a child theme:
Products within a specific product category can only be added to the basket if the customer buys 2, 4, 6, 8, 10,... items.
Ideally for these products the quantity field beside the add to cart button consist only of these numbers.
This function must work together with the plugin "minimum purchase rules" because in total customers can only purchase products in a row of 6, 12, 18, 24,...
System running in dev mode: http://d23472.ispservices.at/meinklang.at
Shopkeeper theme is in use.