4.6 - ui: Game controller support

What exactly does this mean? I took it that I could effectively figure out how to switch between buttons within a widget using the gamepad (the old method I used was to create a new widget containing the highlighted button directly over that choice and then moving from there to highlight the next one down or actually use that button).

The problem with my method is that I can’t seem to figure out how to move down and up. I can create menus that uses the gamepad, but the player can only navigate using the down button. So my question is. How can the gamepad be used to navigate between UI elements? Where exactly do you start?