Thank you both! Yes I can do one by one but hoped to find the tool that would change them all.
Unfortunately the shipping profiles won't work for me as it demands I enter a "shipping cost". I'm not sure how this is possible for anyone unless the item is something like a necklace or every item in their shop is identical in size and shape - or am I missing something here?
All my pieces vary in size, shape, weight, and box sizes depend on the shape of the piece. I determine the shipping cost per piece, as close as possible.
Without completing that info it won't let me complete the profile, where I could change the 'processing time' for everything in the shop.
Frustrated.