I don't think there's a definitive guide, but the following post has some tips that might be helpful:
On the Wink Relay, within the custom STWinkRelay app, there are configuration options to choose what pressing the physical buttons on the relay does.
You can configure the device to do nothing when the button is pressed. In that case, it won't physically actuate the built-in relay (switch) on the Wink Relay, but it will still send the button press event to Hubitat.
You can then use the built-in Rule Machine or Button Controller (depending on your hub software version) to use the button press events from the (parent) Wink Relay device to trigger actions on other devices.
