Desktop Application - Dev testing

Hello, the company I am working for has made some integrations with RingCentral and we are currently in the testing phase. I want to connect the RingCentral Desktop application, (not the phone), to our test region to ensure the integrations to RingCentral are behaving as expected. Is there a way to connect the main RingCentral desktop application to the developer account?

What I want to do is ensure the integration loads our app with the client details when an incoming call occurs.