That's an easy one. File for lost time and for the time the sup was working. Easy win. No need to get into an argument with a sup over a sup working grievance. Bring it to their attention, document response, continue working and file.
All it takes is a backbone. I filed on a full time sup doing a rte after a driver was fired (the firing was just). Ft sup pulled my aside and thanked me.
I always told people, just file on me. Sometimes it's the only way the guys upstairs will listen to staffing concerns. I never did get filed on as a PTer though. None of my local sorters cared.