Hi Mofizur,
Do you have the Admin guide?
Basically after installation the First Run assistant (FRA) will guide you through the setup of Desktop Connection. Where you will have the option of selecting one of the following authentication methods...
Direct
Single-Sign On (SAML)
Single-Sign On (x509)
If you select the Single-Sign On types the user and password fields are disabled and you only need to make entries in the Server and port number fields.
Regards,
Gervase