How to add or modify the Shipping Method on the Transfer Order?

Summary:

Business determines shipping method for each transfer order depending upon the availability of the freight career between the transfer locations. Hence, ship method could be different for different transfer order. Is there any way to add or update the ship method on the transfer order before shipment. This is a very critical business requirement and not finding anyway to have correct ship method on the transfer order. Any workaround? Please let us know.

Content (required):

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):