We already have a shipping calculator integrated for our Shopify store.
The problem is that it can only pull weights from the products and tries to put them all in one parcel.
This is a problem for us as we have heavy products - as soon as the customer orders 2-3 boxes its over weight for the standard charge for many of our shipping providers.
I want to designate that certain products must be packed in their own box and others can be combined up to a maximum weight.
Any ideas?