Open Aura smart application.
Click on settings > Add endpoint.
Click on Z-wave and select the device.
Click on add node.
Case 1 : For Switch/Double switch/Dimmer – Press the button on Z-wave device twice to add the node.
Case 2 : For Touch Panels – Long press on any one endpoint on the touch panel until it blinks and then tap once.
Once the Z-wave node added successfully add the required details and save.
Reference :