The page slider can be setup from app/js/src/script.js .  In this file you can customize these slider settings:

self.pageSlider.slick({
  slidesToShow: 1,
  slidesToScroll: 1,
  infinite: true,
  speed: 500,
  fade: true,
  autoplay: true,
  cssEase: 'linear'
}); 

You can find more settings at http://kenwheeler.github.io/slick/

Also if you want to add more slider items in your homepage, you will have to add a new div which contain the “ky__slider-item” class inside your “ky__slider“.