When a value is set for the keep alive interval setting, the browser can keep the server job from timing out by sending a keep-alive request every so often. The interval is specified in seconds. It is reset every time a new screen is rendered. The keep alive interval will NOT be in effect if the Client Side Timeout flag is true. To use the keep alive interval setting, you must set client side timeout monitoring to false.
Where do you save this configuration option? Here.