I finally found a solution. It is in the Conference Help documentation under peer review. You can as a conference director or track director download the sumission document to a local directory. Then make the changes and upload the review version. The new review version is what reviewers will see.
Using OCS is a wonderful learning experience once you begin to discover where to look.
Thanks to the PKP for a great system. I learn how to work with it better and better eash day.