Hi, though I would always defer to Scylla as she knows a lot more about this, this is my personal experience:
1. Fill out all the forms together on video chat
2. Separate the signature pages from all forms via a pdf splitter online
3. Sent all pages needing signature to him via email
4. He signed all of them using Adobe Fill & Sign which is an app on his smart phone
5. He emailed me all forms
6. I merged all PDF files via pdf merger online
7. Printed all forms out and I physically signed them
Sent the complete package to CPC-M and it was not returned to me. It's a lot of work to split and merge PDFs and takes patience but was worth it for us not having to spend all the extra money on him shipping everything to me via express courier. But then again, I may have just been lucky that my VO was not strict.