How to make Simple Lightbox work

Hi,

Total noob question. I’ve been piecing together a WordPress website and wanted to add a little more functionality to it. Figured Simple Lightbox would add a little flair to thumbnail images, but I have NO clue how to make it work inside an item.

Here’s one of the page I’m working on:?https://rcpg.connectrax.com/guidelines/a2/

The image on the right currently opens to its own page, but I’d like it to open in a lightbox. I don’t want every image on the site to do this, so I’m hoping this is a page-specific plugin. Any help would be appreciated.

Thanks!

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