Slideshow on Art-Magazine by Ahmad Raflis

Is the area on the top left of the homeshow really a slide show?

How do I run a slideshow on it?

I create slide shows using Lightroom and Shadowbox. When I write the code in WordPress I write it as https://www.websitename/wp-content/slidegallery/slideweb/index.html rel=’shadowbox’

But when I put that code into the menu box, it doesn’t work….??
Do the other side boxes work the same way?

Thanks for your help.