How to stop FYI notifications while converting PO and SO to Suppliers, Requesters, and Buyers

Summary:

We understand to do the setups listed below to stop notifications from firing to external internal users. We need to know what else needs to be taken care of. This question we are asking because the customer has gone live on HCM and BPM Worklist Admin has Notification Mode set to 'All'. We do not want any emails or In-app notifications to fire to suppliers, requesters, and buyers when we execute conversion on Production instance

Content (required):

Intent is Suppliers, Requesters, and Buyers should not get In-app FYI notifications or emails.

For Suppliers:

1. Set Communication Method on PO and BPA header worksheet to 'None'