Hi Nancy,
we incorporated the NDA to the Supplier Profile Questionnaire (SPQ). Suppliers download the empty document from the SPQ which should be then filled in, signed, scanned and attached back to the SPQ question. Once supplier answered all questions and attached all documents to the SPQ, the NDA is then (together with other documents and questions) verified and the supplier approved/rejected by defined Approver. Then the approved supplier can be invited to RFPs.
Best regards,
Rostislav.