I'm a new flex developer. I want to create a UI roughly like the included image. As stated on the image, the purpose is to allow users to visually define a many-to-many data relationship. The point of the exercise is to maintain the rows in the intermediate table that contain the relationship information. Neither the lists nor the list items will be editable.
I've searched and haven't located any existing components that would appear to support this interaction. There's a good chance I'm not using the right search terms. Know any existing components that would make this straightforward to do? Maybe some part of a game or quiz engine?
Any suggestions for the newbie, on how to implement this?