How to change images in template slide show:
1) Under "Site" menu on the left hand side of builder
2) Select "Design"
3) Click on the paint pallet at the bottom of the screen "Design Options"
4) While on the "Theme" tab, select "Options"
5) Scroll to the very bottom, where it says "Design Options"
6) Click to turn on the "Slideshow"
7) Here you can change out your images
8) Make sure to save any design changes, before publishing your site.