Email Notification Basics?

Hello,

I'm wondering how to set email notification basics when a form is filled out?
I found a filter that I can add to change notifications, so I suppose I could figure out how to use it, but is there a simpler setting somewhere that I'm overlooking?

<?php
2 add_filter("gform_notification_email", "change_notification_email", 10, 2);
3 function change_notification_email($email, $entry){
4 return "test@test.com";
5 }
6 ?>

Thanks!