The Lightbox Element is a very simple Element to use. To start, just add the element into your desired column.
At this point, you have the options window open. The first step is to choose which what sort of media you wish to display. You can show images or videos in Lightbox.
The next step is to upload the full size image. This is the image that will be displayed when you open the Lightbox. Alternatively, place the url for the video in the field below. Then you choose the Thumbnail image. This is what will display on the page before you open the Lightbox. Finally, there is an Alt Text and a Description Field if you wish to use these, as well as a CSS Class and a CSS ID field.
Once you have finished configuring your options, remember to save your work.