[Plugin: NextGEN Gallery] Adding a gallery with only a few thumbnails

I am creating a site for vacation rentals and want to create a page for each (there are only 7) that includes one large photo of the property and three small ones below it. Ideally if the user clicks on any of the four, but at least one the bottom three a light box window opens to scroll through the 15-20 photos we have of each property. Does anyone know of a way to do this?