Where are the "how to" instructions / docs?

Hi all,

I'm trying to set up my pit stop voice command options for CC and I'm not finding them in the list of options in the client, and I came here to try to find any tips or documentation on using the custom command function to set this up - anyone have this?
Specifically, something for pit stop commands (road racing) for:

- Give me enough fuel to finish
or
- Give me X gallons of fuel

and

- Do not change tires this stop

Is this easier than I'm thinking? It wasn't intuitive using the client to create a command for it for voice command.

"pit stop fuel to the end"
"pit stop add xx gallons" (metric needs to disabled in properties)
"pit stop clear all tires"

https://i.imgur.com/iLLcAYp.png

Lots of good info under HELP, but I still don't see how to select Crew Chief from within iRacing.

There is nothing to select from within iRacing, crewchief is a standalone app.