ZyXEL Communications ZyWALL USG Series Application Note page 77

ZyXEL – USG Application Note
(2) Add AP profiles and select these 2 SSID object in the rule
Go to Configuration > Object > AP Profile > RADIO and Click add button to create AP profile
2.4G Band
5G Band
(3) Apply AP profiles to Local AP interface
Go to Configuration > Wireless > AP Management Click local AP(IP address is 172.0.0.1) to edit the rule.
Apply the AP profiles to this rule.
Verification:
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