Trying to recreate your gallery page on my site.

Howdy! I just purchased the Bold Photography Pro theme. I'm sorry if this is a stupid simple thing, but I'm trying to make a lightbox gallery like this one here. I can get my gallery to arrange themselves into the pretty gallery formation thanks to Catch Gallery, but I can't figure out how to make it so that when you click on the images, it opens the slideshow lightbox like it does in the link above. Right now, my pictures don't link to or do anything when you click on them. I went to follow the instructions on setting up the Lightbox according to Catch Themes, 2. Customization, "How to enable/disable Zoom, Lightbox and Slider effects for WooCommerce Product Gallery?" The instructions say, "Go to “Appearance => Customize => Theme Options => WooCommerce Options” The Problem: I don't have a "WooCommerce Options" button when I open Theme Options. Now, I've been driving myself nuts all day trying to find where to activate this WooCommerce thing. Was it not downloaded when I downloaded the theme? I thought that was a plugin for processing purchases on your website. What does it have to do with making a lightbox gallery? What am I missing here? Thanks in advance for your time.