Use Pingpong when you have a question or draft with assumptions worth checking. The review is most useful when you can verify what the models change.
Tasks to try
Decide whether the extra review helps
A simple formatting change or short draft may need only one pass. For a review, record what you learned, which changes were supported and how much work remained.
Keep the source of authority clear
A merchant policy, transaction record or professional determination has a different role from an AI suggestion. Verify the important claims before acting. Read how the review works.