Please click on Create new provider and give suitable name and click on Next page as shown in the image below.
Fill all the required details.
In Channel Settings, you will find your Channel ID(Client ID) and Channel Secret(Client Secret). Please copy it and keep it handy.
Applying for email permission click on Submit next to "Email" in the OpenID Connect session and Agree to the application terms and upload a screenshot of the screen that explains to the user why you need to obtain their email address and what you will use it for.
In App settings click on edit and ADD call back URL/Redirect URL.
Step 2: Set credentials in miniOrange Social Login Plugin
Copy the Client Id and Client Secret form above setup and Paste them into the fields in Instructions.
Then click on Save & Test Configuration button.
Custom app will set properly when Test configuration get successful