images in slideshow but not on the page

Hello team

I have a request.
Is it possible to have a slideshow where I can show images, which are not shown on the page.
look to the link https://baerbelhans.alfahosting.org/skulpturen/
here the first image should be shown on the page but the second and third only in the slideshow….
I don′t know how to realize this.
Maybe someone can give me a good suggestion.

thanks Marga

The page I need help with: [log in to see the link]