You must use one of the additional supported 3rd party systems: JomSocial, Community Builder, K2, Agora, or Kunena. If you have these systems, simply install the profile plugin (found in the JFBConnect download area), install and publish it. Then, on the Profiles page in the JFBConnect administration area, you can set up exactly how you want those fields imported into the user's profile. For more information, see the following page of the configuration guide:
www.sourcecoast.com/extensions/jfbconnec...ration-guide?start=8
Hope this helps, and good luck!