Linksys Wireless-G WRT54GS Router (e125894) "disable ap isolator" Questions

How can I disable the AP isolation on my Aztech router HW550 -3G? Thanks Aztech router HW550 Disable the router's SSID broadcast.

...Disable wireless AP isolation. Linksys WRT51AB Yes Yes Linksys WRT54G Yes Yes Linksys WRT54GC Yes Yes Linksys WRT54GS Yes Yes Works great Motorola WA840G Yes Yes Works great Motorola WR850G * Yes Yes ...

...AP isolation under advanced settings. Is this the right setting? I have enable or disable options and its currently disabled. This also has the dual bands so I have the same options for the 5ghz and ...