Create Smart Home Groups for Alexa

You can control several devices at once with smart home groups.

Open the Alexa app .
Open Devices .
Select Plus , and then Add Group.
Select either Create a room or device group or Combine rooms or groups.
Use the preset group names, or create your own, and then select Next.
Select the devices or groups you want to include, and then select Save.

Note: Although you can't add an Echo device to more than one Smart Home Group, you can achieve this same effect by using the Speakers setting within your group.