Hi,

To turn the wireless radios off and on with the WiFi On/Off button: Press the WiFi On/Off button on the top of the router for two seconds. If you turned off the wireless radios, the WiFi On/Off LED and the WPS LED turn off. If you turned on the wireless radios, the WiFi On/Off LED and the WPS LED illuminate.

Netgear Wifi Extender Setup | Netgear Range Extender Setup

First of all find netgear login and log in into it. That you can easily find the auto settings which will help to configure all you need. Just don`t forget to make your WIFI private and to add the password.