Google Nest Community

I am the owner of the the Nest Thermostat App (I have a gmail account). I want t share the app with my wife. Do she have to have a google account?

I have a remote sensor identified as “office“ and the thermostat is identified as “hallway thermostat“. When the remote sensor is operating it is identified as “hallway thermostat,“ on the face of the thermostat as well as on the app. Is there a way ...

If I connect both my wife’s and my cell phones linked to the thermostat and Eco mode is activated, will it know that one of us is still home and not change the temperature? We’ll both forms need to be away from the home to activate Eco mode?