If I have an xaml file with $2$ tabs and in one of the tabs $($let$\text{'}$s say in the tab called Render Groups$),$ I have the modify button, which when I click on an item in listbox, then click modify, it makes a brand new window with $3$ totally different tabs called "design options" "views" "materials", how could I actually control which tabs appear in this new window? Do I need a new xaml file? I really have the $3$ tabs already made in an xaml file so I could just paste them across, but I am unsure what to do using ironpython and xaml. Once I open that window, I also have to consider that the information I create in that window should be held $($aka$,$ if I selected Views A$,$ B$,$ C in the view listbox and materials Wood, Glass, Concrete in the materials listbox for example$).$ The reason for this is because the modify button allows people to modify certain aspects of a selected item in the render groups listbox which I thought was more convienet if it was using listboxes