hmmmm… you want me to read the documentation for you 
Overview:
Possible solution from the docs (hardware: read posts before):
To do this:
Open the Z-Wave JS to MQTT control panel by clikcing the "OPEN WEB UI" button on the add-on page in the Supervisor.
In the control panel, go to "Settings" in the menu and click on the "Zwave" bar that shows up on the right.
Enter the following information:
Serial Port (e.g., /dev/serial/by-id/usb-0658_0200_if00)
Network Key (e.g., 2232666D100F795E5BB17F0A1BB7A146)
Now click the “SAVE” button and navigate to the “Control Panel” in the menu. If you had devices paired already, you should see the showing up slowly.