GL-MT6000 Proxy setup

Hi guys, I need some help. I am extending a WiFi network using my GL-MT6000 but I need to setup proxy for the network to be connected to the internet how can I do that currently there is not option for entering proxy information. Please help. Thank you

When you extend an existing Wi-Fi network there is no need for this setting because the main router will take care of it, I would say.