I'm building a site with Flashlight for a photographer. We have 3 categories of images. I've created separate Portfolio posts for each category. These are each displayed with the Gallery Layout set to "As background slider only". Additionally, I'd like to include a full portfolio page which shows all the images in the 3 separate galleries combined with a Flexible Grid Gallery layout without having to upload duplicates of all those images. I'd like that page to pull the existing images from those 3 categories, essentially embedding those 3 Portfolio Items into a single new Portfolio Item.
Is this possible?