By default the Zone is not shown in 3d to switch it on go to 
View > Elements in 3D view > Filter Elements in 3D or a quick short cut key of CTRL + ALT + A to display the filter elements dialog box and click on the Zone check box to make it visible in 3D.
					
				
			
			
				
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ArchiCAD Service
ArchiCAD since v9 to latest
Mac, Windows 11