Setup infinite scroll for SevenMag theme

Hi

I use SevenMag theme for my website and I want to setup infinite scroll, but I can’t. any one can advise me to do this?
you can see this theme demo here: https://theme20.com/sevenmag/
and I want to use infinite scroll in the category page, for example here: https://theme20.com/sevenmag/?cat=6

thank you.

https://www.ads-software.com/plugins/infinite-scroll/