Stand in front of one of the devices you have installed. The Neviweb app must be open on the All Devices screen.
Press the two buttons of the device in front of you. Instantly, a halo will surround one of the devices in the Neviweb app. Press the device on the screen.
Open the settings for the selected device and assign a name and a room to it. Naming your device will allow you to easily identify it later.
Repeat steps 1 to 3 for all your devices to identify them properly in the app.