Add an image as the viewport background in Daz4.9

How do I add an image as the viewport background in Daz 4.9? 4.5 has a way to change the color and add an image. I can not find on in 4.9. Please help! I wann use the shadow catcher on top. Done it a hundred times in 4.5.
Comments
Open Enviroment tab. Click Backdrop. Click down arrow button to add image or just use colors. Oh by the way great freebies.