How do I offer combined postage? When setting up my products I have entered weight and dimension and ticked combined postage where it states 'apply my calculated postage rule' but I don't know how this works and currently it is not allowing a cheaper rate for combined postage of the same product but in different sizes. How can I rectify this?
What discounts does the postage rule apply? I crrated flat rate postage rules for discounts so am not too well versed on the options for calculated, but they should work in a similar way so I can take a look and try to troubleshoot.
