How to create Credit Memo per specific shipping address

In Magento, a Creditmemo can be assigned to a specific shipping address. This guide shows how we perform credit memo per shipping address.

1/ Create a MS order. For example, create a MS order has 2 quote addresses (QA)

2/ Ship the two QA. Print the label. Click button `Daily Ship and Capture` to generate the invoice

3/ Now that the MS order is invoiced, go to BE MS order. Each shipped quote address should have a `Credit Memo` button: