Once you have installed the Wi-Fi relay, you can easily integrate it into your existing Wi-Fi network via the Shelly app and select devices for use. You can set it up either via Bluetooth or Wi-Fi. You can add the desired devices using the "Add device" button or the blue plus sign at the bottom right of the screen.
When installing via Bluetooth, select the desired device from the list displayed and enter the home Wi-Fi network data in the app. You must confirm the addition of the Shelly module, name the device and include an icon image. If you decide in favour of the Wi-Fi connection, select your own network, search for the right device there and add it.
Step-by-step instructions:
How to add a WIFI relay in the Shelly app