You can use backgrounds for grouped controls. You can edit the following parameters for background screen controls.
General
Name field: Enter a name for the grouped control in the Name field.
Description field: Enter a description for the grouped control in the Description field.
Panel button and well: Click the Panel button, then choose a panel or texture for the background from the menu that appears.
Image button and well: Click the Image button, then drag an image into the well to use it for the background.
Select button: Click to open an Open File dialog to browse and select an image.
Stretch to Fit checkbox: When selected, the image stretches to fill the area of the background as completely as possible.