One way I've seen it done is using a Button. In order for it to work best it needs to be the first object you place, and place everything else over it.
Drag a 'Button' and under 'BUTTON PROPERTIES' > 'Configuration' > 'TEXT & ICON' click on 'More Properties'.
You will see the option to browse for an icon file. You can center the image however you like, delete the text, and use it as a background image.
Not a perfect solution but only option I've found.
