When printing FedEx shipping labels, I can see empty fields I would like to edit, like DESC-2, DESC-3 and DESC-4, as DESC-1 is filled with the product name.
I would like to add Product Short Descrition in DESC-2.
I would also like to override T/C and D/T fields that are filled with the FedEx account ID, hiding it or write SENDER.
I've been looking around but can't find where to start.
Any idea on how I could get this done please ?