How do you set a the buttons in a UIToolbar for subview of Navigation Controller application using Interface Builder?

I have a navigation-based iPhone app that goes down 3 levels deep currently. The MainWindow nib has inside of the Navigation Controller a navigation bar, toolbar, and a reference to the Root View Controller which has the toolbar items and navigation items inside of it in the hierarchy of stuff in the nib file. My other view controllers are located in other nibs. How can I add items to the toolbar that appear in the toolbar when I drill down to other views using Interface Builder? I know it's possible to do it programmatically like this:

nextViewController.toolbarItems = arrayOfToolbarItems;

However, it seem开发者_如何学编程s like there should be a way to do this in Interface Builder. This shouldn't be a terribly uncommon task, so I'd like to improve my understanding of how to use IB for future reference.