Thanks for supporting Lay Theme 🌝
The example website: https://patrickfry.co.uk/ uses the Carousel Addon for this top feature.
The Fullscreen slider is a bit different as it needs the Rows of your Gridder in order to make it's slides. Row-0 is Slide-1, Row-1 is slide 2 etc. Because of this when Fullscreen Slider is activated it will require your whole Project or Page.
You can make a Carousel full-width but can then have other rows doing whatever you wish!
Hope this clears things up & have a wonderful day ✨
Best Lay Theme Team