Gotcha, thanks for the clarification. I haven't really messed with the navigation portlet before, TBH (I just use the menu bar). If I had to take a wild guess I would think it would just mirror the menu bar, so if you make center/tab changes they should be reflected in the navigation portlet as well. If that doesn't work, or you want them to be different, maybe someone more knowledgeable can jump in with some insight, but I would think at that point you're going to have to do something like building your own portlet that's a facsimile of the real one to get what you want.