Please mind that support does not include customizations (according to ThemeForest rules). Nevertheless, I provide easy mods here — the ones that I can pull off the top of my head. But the mod that you have mentioned here is not of that sort and would require relatively substantial amount of work. So the only thing that I can offer is to contract me for doing this. If you are interested in a quote, please drop me a letter at email@example.com. Or you can as well contract a WP expert at Codeable.io or Envato Studio for doing this.