Clusters Up/down mode instead of Ask/Bid mode.

I found that within the same K line, the buying and selling volume of ATAS and NinjaTrader are different. I heard that ATAS uses the Ask/Bid mode to calculate the buying and selling volume, while NinjaTrader uses the Up/Down mode to calculate the buying and selling volume.

Since I have been using NinjaTrader for a long time, I want to see Up/Down data in ATAS as well.