To amend an existing shipping profile, click on the Selling Options link in the Account Manager page. Select Shipping Profiles. Find the profile you wish to amend in the list and click the Edit icon. Once finished, click the Update button at the bottom of the page.
How do I create a new Shipping Profile?
How do I duplicate a Shipping Profile?
How do I delete a Shipping Profile?
How do I activate or deactivate a Shipping Profile?