1. A machine-implemented method comprising: receiving a request to join a first graphical user interface object with a second graphical user interface object, wherein request is received as a gesture that is received at a touch-enabled display screen from a user operating the machine; associating the first and second graphical user interface objects with each other in response to receiving the request; displaying, on the touch-enabled display screen, the first and second graphical user interface objects adjacent to each other; and displaying a visual indicator proximate to the first and second graphical user interface objects that indicates that the first and second graphical user interface objects are in a group.