I would suggest you to see this Demo. It shows dragging and dropping the items between two lists.
You can also implement it with buttons using the getSelectedItem, addItem and removeItem methods of jqxListBox.
Hey Martin – thanks very much for the hint; great idea. Funny what you can’t see when it’s right in front of you!
Since the jqxlistbox seems to only allow a single displayMember, and I need to show 3 or 4 columns in each control, I’m going to try the dataGrid + some buttons to move the items back & forth.