HELP! I cannot for the life of me figure out how to do this, so presume I'm doing it wrong I am selecting the items I want to edit but there is no option for postage. Any advice will be greatly appreciated 
HELP! I cannot for the life of me figure out how to do this, so presume I'm doing it wrong I am selecting the items I want to edit but there is no option for postage. Any advice will be greatly appreciated