2 Forms, One Sheet, Help with requesting info from 2 different sources to 1 line


Is this possible? I am creating a vendor repository. Business owner will initiate The first few fields and a notification will prompt info from the vendor to complete. I want the info from the vendor to updated in the line created by the Business Owner (BO). Is this possible? How would I go about doing it.

Or do I use the notification and request for additional information tool for this type of information being requested.

TIA - Nicky