How Exactly to Add a Plane Model to AI Traffic?

Let's say I purchased Just Flight's Pipers (or really any plane from anywhere) and wanted to specify them as options to be used as AI Traffic.  Is this possible?  I'm led to believe I can do this via the plane's aircraft.cfg file, but reading the SDK documentation notes on air traffic here: 

https://docs.flightsimulator.com/html/Content_Configuration/SimObjects/Aircraft_SimO/Additional_CFG_Information.htm#air_traffic_notes

...I'm just as confused.  What exact parameter(s) should change and to what values exactly?  FWIW, I also have 'Use Generic Plane Models' set to 'On' in my MSFS traffic settings as I don't mind generic models being used for AI.  Can anyone shed some easier-to-understand light on this?

Thanks!