As HDPeet said, the pixel shifter is always ON in the Panasonics so there is no adjustment required. Addtionally, based on postings in the PZ700 thread, very few owners actually see IR of any kind. I've played PS3 (on VIVID) from the beginning and have never seen any IR. In fact a number of us never did any kind of "break-in" procedures at all (except reducing PICTURE setting to 0), rather just watched TV as we usually would and STILL never had any IR. However, if you want to get through the 100 hour "break-in" faster and are concerned about IR on your set, just leave your set on HD Discovery for 10 hrs/day and you'll be done in 10 days (especially if you're anxious to get that PICTURE setting back up to 20+ as most are). With a 1/2 life of 60,000 hours, you're hardly shortening it's life span by speeding through the first 100.
Edit: I just found your other thread indicating you are already "freaking out" about some IR. It would seem you should speed through the first 100 hours as suggested. Any IR you experience should be gone quicker after that and generally in just a few minutes. One guy said in order to test his new set, he left it on a static image for 5 hours and it STILL only took about 5 minutes of watching some HD programming to wipe the IR away. Another benefit of speeding through the first 100 hours is it still gives you time to evaluate the set and still be inside the vendor's 30 day (or whatever it is) return policy.