I have made plenty of fulfillment services but when I am looking at the results of Request Fulfillment button presses, I never see the option to add in a tracking number right there, and also to select a shipping carrier. How does one construct a fulfillment service such that those options become available such as what this screenshot from a merchant shows? I would really like to know the set of circumstances whereby this is the flow.
Can I install a fulfillment service in a shop and provide a choice of shipping carrier to be anyone I want? Like Joe's Delivery?
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