There's only one smart plug you need and here's how to set it up - CNET

Smart plugs are the fastest way to make your home smart -- follow these steps to set one up in minutes.

source https://www.cnet.com/how-to/theres-only-one-smart-plug-you-need-and-heres-how-to-set-it-up/#ftag=CADa08b18a