Portfolio Item with Gallery and Video

I am trying to figure out if I can edit this theme’s code to allow a portfolio item to have both an image gallery and a video directly below it, instead of one or the other, but I’m not even sure where to start. It seems like a simple copy and paste task in a php file.

Here’s a page with an image gallery
https://whoopdeedoo.tv/test-site/portfolio/bemis-center-for-contemporary-arts-omaha-ne/

Here’s a page with a video
https://whoopdeedoo.tv/test-site/portfolio/pica-tba-festival-portland-or-september-2011/

Any leads would be helpful!