How to upload a certificate to an existing supplier? September 09, 2019 19:26 Click 'Add and Edit Suppliers'. Scroll down on the page to view the suppliers and click 'Edit' button on the third column of the table. This will bring up a pop up and you will be able to add certificates on this section. Related articles Training Session and User Guide How do I update my certifications? Indirect/Direct Spend Collection Settings How do I delete an indirect supplier? How do I know which certificates my customers accept?