If you're smart, you're going to take any new person on few small installations.

You'd be amazed what 15min on the jobsite can do for newb's understanding of issues, challenges with simple things like over fireplace installations where there are no wires, or fireblock at 8' in the wall that's 10+ feet tall.

Phone lady doesn't need to be an expert on all products and installation techniques, but having basic understanding can help the initial phone call when someone asks why 'simple' hang and bang costs more than the price of Costco purchased Vizio.