In a cluster all IAPs share the same configuration. If we want to broadcast ESSID only on specify IAP(s) we can use the AP zone feature.
We configure an ESSID and assign a zone to it. Whichever IAP that needs to broadcast that ESSID will be mapped to that zone.
Environment : This article is applicable to IAPs running 4.1 and above OS.
Network Topology : IAPs in a cluster .
in CLI :-
Configure AP Zone for wlan ssid-profile