Before you start, make sure:
I. You have downloaded the Google Home app
II. You have linked your Google Home with your Google account
III. For iOS devices, download the Google Assistant app as well as the Google Home app.
Then you could add the Netro controller in the Google Home App:
1. In the Google Home App, click the "+" in the upper left
2. Select "Set up device"
3. Select "Works with Google"
4. Search "Netro"
5. Login with your Netro account
6. Choose your Netro device to add. Repeat if you have multiple devices. Please find the instruction here: https://www.netrohome.com/en/shop/user_guides/3