AdBanner Slot refers to the images at the extreme right side of the homepage.
To increase the number of Ad Banners, simply click on the Number of Ad Banners dropdown menu to choose the number. The images can be configured in the same way as the banner slot, where a working image URL or website link is respectively added into the suitable blanks. Learn more about converting image files to image URLs.
After you are done adding the images, remember to click the green save button at the bottom and press preview to see the changes in the preview site at the side.