There is no default feature on this yet but it can be implemented through custom coding and or trough the use of a plugin as what some users have done. The theme is not encrypted and so it can be modified according to your needs. Implementation is just dependent upon your coding skills or you can avail the services of an experienced programmer to implement it for you. Appthemes also have certified community partners http://www.appthemes.com/partners/ that you may contact for customization jobs.
Please help our moderating team work more efficiently by not sending us support questions via PM. You can read more about how AppThemes support works here. However, you can send a PM to follow up and remind me if I missed your support request/thread.