You can set up your home plugs by following the below steps:
- Connect the home plugs to a power socket
- On the home plugs side/front, you should find a button
- Click the button of the home plug connected to the modem
- Afterwards click the button on the front from the other home plug
This should pair your home plugs. For further information, kindly refer to the book manual which is provided with the home plugs.