Symbol Stacking Order

You can change the stacking order of multiple symbols using the Symbol Shifter tool that is, as long as you have already selected the instances in the Symbols palette (Window>Symbols). To bring symbol instances forward, Shift-click the symbol instance with the Symbol Shifter tool (nested under the Symbol Sprayer in the Toolbox). To send the symbol instances backward, press-and-hold Option-Shift (PC: Alt-Shift) and click the symbol instance.