How can Buyer add the evidence for Supplier Acknowledgement as attachment without CO?

Summary:

When the Buyer is Acknowledging the Supplier Acknowledgement on behalf of Supplier, there should be an option in the Supplier Acknowledgement page to add the attachments so that the actual Acknowledgement shared by Supplier can be attached to the PO for the Audit and tracking.

Currently, on the Supplier Acknowledgement page, the Buyer can only view the existing attachments in the PO but cannot add new attachment. Is there any solution for this ?

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Version (include the version you are using, if applicable): 23D

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