using Postman and codechef Api

How to use postman and codechef api as codechef api has oauth2 and in postman it is asking for Auth URL
and Access Token URL and in documentation I am not able to find these both.
Any help will be appreciated.

You can find everything in this documentation .

Auth url =>
Token url =>

I have used the same URLs but still I am not able to use postman with codechef api. It gives me error could not complete Oauth2.0 login.