How to enable a Gateway to act as a listener using the Lumos Controls mobile app?

Go to the 'Devices' tab
Click on the icon of the gateway
Select the 'Reconfiguration' option
Enable the 'Bridge as Listener' option

You can also visit the following sections for more information:
To know how to Commission & Configure Control Devices, click here
To know how to Commission & Configure Sensors, click here
To know how to Commission & Configure Switches, click here
To know how to configure Device Settings, click here
To know the Operations and Control details, click here