While we're happy to help you add the Google Nest Thermostat™ into your Frontpoint system, Google is the real expert on how to install it in your home. Because the Nest thermostat is a Google product, they'll be better equipped to support you with the installation. You may want to check here for Google's Nest installation guidance as a starting point.
Once your Nest thermostat is installed, you can add it to your Frontpoint system by clicking on Adding a Google Nest Thermostat™ to my system below
Google and Google Nest Learning Thermostat are trademarks of Google LLC.