Free guest WiFi with Unifi (Ubiquiti)

I’m sorry for my English.
I installed a WiFi Unifi solution (Ubiquiti).
My client requests two SSIDs:

  • Private corporate Wi-Fi (with proxy) -> Perfect operation
  • Free guest WiFi (without proxy)

Is it possible to remove the Guest Wi-Fi from the proxy and it must be independent of the company network.
I tried the rules but without success!

Do you have an idea for a solution?

Paul (Belgium)