I'm developing an employee training registration file. I have a portal listing all [color:blue]classes selected by an employee, and a portal listing all [color:red]available classes. My question: How do I remove the [color:blue]classes already selected from the [color:red]available classes portal.
After all you can not register for a class that you have already registered for, so I do want them to be able to see it in the available classes portal.