CMS lightbox not having all of my images

I am trying to make a Lightbox that would have 3 images from my multi-image library in a tiny grid, once you click on one of them, the lightbox pops up and I want the lightbox to contain rest of my multi-image library. Is it possible or I am approaching this wrong?
In the image is the part of the page I am talking about.

Here is my site Read-Only: