This is if you have products that fit into a case with a quantity which will be used to work out the shipping price based on the Case pack.
First of all you will need to move the “ship_case_quantity” attribute under the “Shipping” tab. To do this you will need to go to Catalog>Attributes>Manage Attribute Sets. Then select the Attribute set you wish to assign the attribute to. You then need to move over the “ship_case_quantity” attribute to under the “Shipping” group.
Next you will need to go into the “Shipping” tab on the product and then put in the case size in the “Shipping Divider”.
This will allow 12 items in 1 case so when the shipping rate is requested it will send 1 package with the total weight.