How to default Supplier email on Requisitions on RSSP page ?

Summary:

While creating a Purchase Requisition, and entering the requisition line on the new RSSP Redwood page, when we select the Supplier under "Source" is it possible to get the Supplier email defaulted on the "Additional Contact Email" or some other field…?

Because on the classic page, the email used to get defaulted on its own, but here i can't see it happening anywhere!!!

Or will we require to create a DFF & do something ?

Content (please ensure you mask any confidential information):

On Classic page, email used to get auto-populated —

Expecting email here on RSSP page (or is there some other field that needs to be enabled on VBS ..?) —