You can use an image decoration or picture display to display graphics on the panel.
The image object is a decoration and not a control, which means it does not have a data terminal and does not represent a value on the diagram. As a decoration, the image object helps users understand the panel or window, such as a diagram of components. Use the Set image button on the Item tab to specify the image to display. Use a control reference to the image object and the Set Image node to display different images at run time.
The picture display is a list of graphic files, built in an application or library component in your project. You define the pictures at edit time and switch between the pictures at run time. For example, you set a list of pictures that indicate system states, such as online, offline, and busy states, and configure your application to display the system state at run time. Set the pictures to use in the Pictures section on the Item tab. Use the index value of the file to manage the picture to display at run time.