If you want to control multiple Insteon lights and appliances with a single voice command or control Insteon devices alongside connected home devices from other manufacturers that are also supported by Amazon Echo, create groups in the Amazon Alexa app.
Add Groups to the Amazon Echo App
Step 1
Launch the Alexa app and tap the “Devices” button in the bottom right corner.
Step 2
Tap the “+” sign in the top right corner to add a device or a group.
Step 3
Tap Add Group
Step 4
Give your group a name and select the devices that you would like to include. When ready, tap Save.
Step 5
Choose the devices you would like to add to your group and then tap on “Save” at the bottom of the screen.