Responsive Directory Slider

I love the way our fellow premiumpress client/users created their stunning sliders such as the one showcased here at:https://www.newsavoydirectory.org/ (Psychological Therapies Resource Directory). I find it great and elegant that’s why I asked them how to do that. They said it is in the built-in slider setting, however I really cannot find it there, I even tried a third party installation as recommended, the VSLIDER Plugins but when I followed the steps & turned on-off/disabled the slider function, still there is no such sliders appears. May I suggest to grant us access to make this sliders as shown in https://www.newsavoydirectory.org/? I asked our support tem and Marie said it’s Version 7 of the non-responsive theme and all we need to do is open this to our forum and request if this could be consider. Hopefully yes.