Hi Vasco:
I reached out to the product team with your question. Here's the guidance offered:
"Vasco will know if he can take this action if he can 'Surrogate Bid' for the supplier from the suplliers tab in the RFI/RFP.He can also contact the Help Desk for assistance with this action. There are instances where some companies have policies that prevent employees from taking this action."
Debbie Curtis-Magley
Ariba Exchange Community Manager