In 9.2, Image 22 & Subsequet, how do you get Procurement Contracts draft versions to automatically a

I'm trying to configure 9.2, Image 22 to utilize the new enhancement to automatically approve a draft version of a Procurement Contract on a pre-defined date.  The enhancement is described in CFO as "Enhanced to provide a new Procurement Contract draft versions that would automatically approve on a preset approval date. Added a Procurement Contract workflow process to run a process that will approve the pre-approved contract draft version when the current date is equal to or greater than the preset approval date, removing the need for manual intervention."

I added dates in the Approval Due Date fields of several contracts, however, none approved when those dates passed.  I have looked for the underlying process in PeopleTools>Processes, but find nothing that looks appropriate.  I have also checked in Workflow Process Definition setups and find nothing for Procurement Contracts there.