Got it! Played with it today while changing oil. ThanksTom, my fuel flow data comes from the engines. I can see the fields in the VV System...Network... Source and ...Device List...VV4...Data menus:
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I found the DSM setup confusing at first. There is a "Fluid Flow" data type that looked like the obvious choice, but proved to provide no data in my case. I suspect it may be for Maretron devices.
Turns out there are two other data types that provide what I wanted:
To display flow by individual engine, first select the "Engine" data type, then Fuel Flow:
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For totals, select the "Fuel Management" data type:
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