Accepting or Denying a Supplier Request to Participate in an RFx 
In the To Do List channel, choose the link for Supplier Invite Requests.
You see a list of supplier requests.
Select the supplier request to consider.
On the Summary page, you see fields you can view but not edit. These fields show event, supplier, and approval information.
Choose one of the following actions:
Approve
Deny
Under Approval Information, you see the new status for the request. The supplier sees the status of the request in the Upcoming Events channel on the Supplier Workbench.