When life-ray is set up with CAS SSO... I am assuming that life-ray user addition/modification can still be done through life-ray portal. And expectation is that that will be synced up with LDAP behind CAS... Is it true?

Yes


Users are imported at the time of Login.

HTH.

How can I set liferay so that when I open a Windows session and I open the browser then I can go directly to the liferay profile without typing or the login and password from the LDAP directory