To group your devices together, click the “In your home” section and scroll through the device list and select what devices you want to add to your group by tapping.
Tap the “Add to a room” button at the bottom left of your screen and enter your custom group name or select a common name, when finished tap “NEXT”.
Your group will now appear on the home page with the selected devices. You can interpedently control each device in the group with a voice command.
For example, “Google, turn [GROUP/DEVICE] ON/OFF” “”Google, turn Living Room TV ON.”