On this page

Homepage

Setup homepage

Go to Admin -> Appearance -> Theme options (tab Page) to select a homepage.

Customize homepage

Go to Admin -> Pages -> Select Homepage

Home slider.

It's shortcode simple-slider in the page content.

You can change slider or set ads / display newsletter form if you want.

In this case, it's using the slider with key home-slider. You can find it in Admin -> Simple Sliders.

You can modify Home Slider 1 or change the key of shortcode to use other sliders.

If you want to make slider full width, just deselect ad:

Then it will be full width