What Are The Kidney Stones Pressure Points To Use For Acupressure?

I am working at Amundsen-Scott South Pole Research Station for the austral winter. A 36 year old male friend of mine (ht 6 , wt maybe 170lbs-slim) has kidney stones and has been in pain for a month at least. We are not set up here for all kinds of medical emergencies and had he developed these stones in the austral summer he would have been medevaced from here to New Zealand. This is not the case in the winter where no planes fly in or out until late October or early November. He is taking FloMax and some different pain killers. It seems he has passed one stone already, had two good days and is now on the second stone. Nothing the doctors here are doing is working. I would like to know the pressure points to use for acupressure for kidney stones. The websites I have seen don t go into detail. This may be the last thing to try that could work besides just waiting it out (which means almost 6 months if it doesn t pass on its own). Can you help with acupressure instruction? Any advice you can offer would be helpful. Thanks, Holly Allin