There is no option on this out of the box but can be implemented through custom coding and or through 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 additional requirements. However, implementing this feature requires some coding knowledge and if you are not comfortable with codes you can just hire a coder to do it for you. Appthemes also have certified community partners
https://www.appthemes.com/partners/ that can be contacted for customization jobs.
