Dear Friends....I'm an italian Student and I'm testing something around Placed Order....the same thing that we can see in a Levels of BOOK CME.

I use Market Delta with Zenfire or Transact and So....I have seen that If I do Right-Click and then Time&Sales I can monitoring the AskSize and BidSize.
I have seen, however, that if I go on Preference --> Chart and I set "Show Ask and Bid Tools"...MarketDelta Plot on the Last Candle the AskSize and BidSize but only the last cronological....and It doesn't do any summation at the same price.
Can someone tell me more about that??

Many thanks....and sorry for my horrible English.