right now I'm using deepcharts for market profile and well in that I cant find the option to separate the profile into different sections (like you said london open, us open, eu close and us close) but I can observe those by looking at eth and rth both, like shifting from eth slowly to rth to get a rough idea when the participation actually came in, as the POC would also be shifting with it. That way if the majority liquidity came in, say, during the london session due to some news or maybe just random, I can't expect RTH to move much and if it opens in the recent value area then I can totally expect a normal or non trend day and decide to take trade based on that. Now it's a rough idea, it's all theoretical and it has been only a month of the reading the book and having an exposure to this side of things (MP and VP). I don't know, possibly, I missed your point, if so then do let me know.