When selecting items from the Library you often have to scroll down to see all the choices of images, icons, background images and shapes available to you. Just stretch the viewing pane to see more. You can drag the top up and the left hand side out. The result is in most cases you can see all the items available in that group.
Just place your mouse on the pane edge and when the cursor changes to the double arrows and vertical lines, drag the edge in the required direction.