Multi-source ShadowsFor each secondary light source you want, create an empty “dummy” box and choose Item> Content> None. Place the dummy box at the edge of the main item. Repeat for other desired light sources. Assign a drop shadow to each item, and adjust its color and opacity, spread, etc.
If you Group the items, you can add an additional shadow.
At the end, you may need to bring the original item to the front of the group to avoid any shadow spillage from the dummy items.
Jay Nelson is the editorial director of PlanetQuark.com, and the editor and publisher of Design Tools Monthly. He’s also the author of the QuarkXPress 8 and QuarkXPress 7 training titles at Lynda.com, as well as the training videos Quark includes in the box with QuarkXPress 7 . In addition, Jay writes regularly for Macworld and Photoshop User magazines and speaks at industry events.