SSO login or add default server during installation

Hi,
I installed an Openfire server with LDAP synchronization. Now I am trying to install via GPO Jitsi Destop application. How can I force SSO login to the application, or how can I turn on only window, where user will enter his AD username and password - without need to create an XMPP account by entering a domain name or server IP? What keyword can I look for this?