Enabling Oauth authentication for EPMAgent using IDCS

1.) Which configuration file of EPM agent has the details of IDCS tenant(to which EPM agent will be connecting to perform the Oauth auth).

2.) Each time EPM agent does Oauth authentication what are the steps performed.

3.) Location to store the refresh token. How agent picks the token from particular location/file, do we need to update the reference of the file(with refresh token) in EPM agent configurations?

4.) If we have valid refresh token how to generate the access token without running curl manually.

5.) In case refresh token is expired how is the createoauthtoken.bat script triggered. Is there any configuration required to call the createoauthtoken.bat script to generate the access and refresh token.