That's not the way wireless infrastructure is typically designed and deployed.      Are you concerned too many devices may connect to a single AP?  If that's the case, you may need to increase the density of WAP's in that area. Or use a feature such as client balancing.  If you're concerned about bandwidth usage on an individiual AP, you can set per-client traffic shaping (under Wireless -> Traffic shaping). 
						
					
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