This should only apply when your Brilliant is directly connected to at least one smart light on the circuit that is controlled through SmartThings.
You can only control one smart light at a time UNLESS you use the 2-finger touchscreen gesture as noted here or create a scene with multiple smart devices.
- Set up your light as an "Always On" light with directions here.
- Add your SmartThings Devices as noted here.
- Adjust your gesture and slider settings as preferred for your configuration.
- Go back to the Home Screen. Swiping up/down should now control your smart light.