Thanks, but that wasn't quite working for what I need. I think I need and either / or function so that "All lines" can't be chosen at the same time as any of the other lines, but any combination of other lines can be chosen. "All Lines" is a sum total of the other lines, so if it is chosen along with other lines it returns redundant data.
Thank you, but that's not working either. I attached the qvw below. It's the same issue with the "Metric" list box. If "Overall DT %" is chosen, user shouldn't be able to make other selections at the same time.