Foreground images can be added to a service item using the Add foreground image button in the service item edit view. Browse images from your media library, or upload a file from your computer. When you've selected the image you want from your media library, click Add to foreground on the right side of the media browser.
Stretch, resize, and rotate the foreground image on the slide once it has been added to your presentation. Right-click the image for the option to resize, scale, or crop the image.