How setup authentication user by ADFS?

How setup authentication user by ADFS?


Product : ManageEngine ServiceDesk Plus 9.2 Build 9231


I'm follow as URL : https://www.manageengine.com/products/service-desk/ad-sso-integration.html and some step unclear.


How enable Page Admin->SAML Setting Page on my Server? 

                  New to ADSelfService Plus?