Hello RickS,
Install and launch the SmartThings app from your mobile device (smartphone or tablet).
On the app, follow the screen instructions to add the Soundbar.
• The automatic pop-up may not show on some devices.
If the pop-up window does not appear, press “+” on the Home screen. The Soundbar is added to the app.
Follow the setup process and then your Soundbar will be connected to Wi-Fi and the SmartThings app. Within the SmartThings app, press the 3 dots in the top right corner and then click on ALEXA SETTINGS.
Sign in to your Amazon Alexa account and you'll be all set.
~Samsung Solutions