In the short time I have been using this program I have come to really wonder who the PEGA UI designer is. I think it is possible that they are actually an alien and they have not had contact with any human beings before this time. It has the most un-intuitive UI design I have ever seen. It needs some serious user testing and then a rework. None of the labels make any sense. All the positioning is terrible. Things are buried in layers of context menus for no reason. Scroll bars hide things when there is plenty of screen space.
You can tell that the UI designer is a programmer, not a UI designer basically.