volume subgraph needs to be on and make sure that there are enough bars for the study to calculate. I forget what the default is but that number is the length it uses. don't have the chart show less then 100 bars to be safe.I'm almost embarrassed to ask this question, it feels really basic but here we go...
I trade forex and have tried to add this and many other volume studies to my charts but not a single one actually displays.
I have enabled / disabled the "show volume subgraph" in the settings but that does not help either.