Object interaction menu.

Hello, I am trying to make a dynamically populated UI menu that will show up when I right click on an actor. I am not familiar with widgets but from my research I found that I might have to use a “Menu Anchor”. Could I get an explanation of how to attach the widget to the actor’s location and populate it with the actor’s options? Here is an example of the sort of menu I am looking to make taken from the game “Runescape”: http://i.imgur.com/qnn9q.jpg.

Edit: Do you think that a 3D widget would work well in this situation? I am worried that it might be periodically blocked by terrain as it is a 3rd person game.