PO auto export to external file folder

Summary:

Once the PO is final approved, how to automatically export the PO pdf document to an external file folder (company file server)

Content (required):

Currently, when the PO is final approved, I need to generate PO pdf file and save it to the PO file folder on my PC or the company PO file folder, i want to automate this process and applies to all the POs

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

22B

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