Hi @extinctdisney,
FooGallery doesn’t have that functionality built in.
As a personal recommendation I find using a Media Library management plugin can help with sorting media on sites with large number of images so it’s easier to find content.
There are a number of plugins that do this. One I use is called Wicked Folders and allows us to create virtual folders in the media library where we can drag and drop media images. This is great for creating folders such as “gallery images” that keeps they separate from “site images”, “branding images” etc.
As an example, using a plugin like this you can upload new images into a “unused images” folder and them move them to a “gallery images” folder once you’ve added them to a gallery.