ZyXEL Communications ZyWALL USG Series Application Notes page 93

Management of Local AP interface (Only for USG40W & USG60W)
(1) Add 2 SSIDs in the SSID list (LAN1 and LAN2 subnet)
Go to Configuration > Object > AP Profile > SSID > SSID list and click on the "Add" button to create SSID object.
Disable "VLAN support" and select the "LAN1" interface in Local VAP Settings.
Disable "VLAN support" and select the "LAN2" interface in Local VAP Setting.
(2) Add AP profiles and select these 2 SSID objects in the rule.
Go to Configuration > Object > AP Profile > RADIO and click on the "Add" button to create the AP profile
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