Presentation Slides

I have a new site I’m designing for a client and want to create a presentation slide similar to the one used in this page: salcelis.com

When I look at that page in WP there is a section called presentation settings where I can select the background image and set the buttons, but I dont see where to enable that in other pages or in the new page…

could you please let me know how to do it? is it a specific setting or widget somewhere?

thanks

sal