Hi your scrolling gallery shows a maximum of 14 listings. It sets them up according to time left. The closest to ending are the ones that scroll.
I do not believe there is a way to get other items to show up?
I know it is possible through the paid versions of Auctiva, but not possible through the free to the best of my knowledge.
Also when you just list new items it can take up to 4 hours for them to appear in the Scrolling Gallery.