In order to Add a login provider :

  • Click on =+ icon
  • Select Add Provider
  • Select Identity Provider
  • Enter your APP ID, APP Secret Key, APP key (APP Key field is only required for providers which requires APP Key/Consumer Key such as Twitter, LinkedIn, etc)
  • Click on the Create Button

For Callback URL :

  • Click on Menu icon
  • Select Providers
  • Click/Hover on Provider Options
  • Select Edit
  • Copy Callback URL