You have pulled together your photos and designed the slideshow using the Slideshow module, and it looks fabulous! Short of exporting it to a PDF or MP4 movie, how do you save it so you can be sure it will be there any time you visit the Slideshow module, and so you can continue to revise it?
Saving a template will save your design or layout, but it does not store the photos with it. Creating a collection in the Library module stores a group of photos, but not the slideshow design. The solution to storing the design with the photos is to create a special kind of collection, only available to you in the Slideshow module.