Post this in the PT forums - I'm pretty sure you can, but can't remember for sure, and I think you have to set up custom stats to achieve this.
Just imo - for 6max (I won't give an opinion on fr), table average vpip is a worthless stat. Isolating weaker opponents is so critical in 6max that the overall table stats aren't important.
For example, let's say there are two fish on the table, one running 25/7 and the other running 45/1, and the other three players are absolute nits w low 3bet%, 14/12 and 12/10. The overall table vpip doesn't really matter - you're raising over and 3betting the two fish w a broader range to isolate them when they limp or open, and blind stealing from the nits.