Anni,
When Automatic Registration is disabled in JFBConnect, the user can be prompted for Terms and Conditions before a user can be created. First, the user must click the social network button. Then depending on which Social Profile plugins are enabled and their corresponding T&C settings, the user will be forced to accept the terms before the Register button click will go through. Our Social Profile plugins that currently support T&C should be JomSocial, CB, EasySocial, and Joomla.
I think this should answer your question, but please let me know if you need any further help.
Thanks
-Melissa