I've got a UCC personal connecting to a UC500 for a particular phone. I'd like to be able to have the UCC software not show or respond to an intercom button on the phone. In the CME TSP Wizard it seems like this should be possible under the Call Appearance/Feature Buttons, by unchecking the button. However, I can't find any way to uncheck the button. Is this possible, and, if so, how do I do it?