Thank you for writing.
If you are using RadPageView in StripMode, those buttons will automatically show up when needed. To force them to appear, you can use the following code:
((RadPageViewStripElement)radPageView1.ViewElement).StripButtons = StripViewButtons.Scroll;
More information about these buttons can be found here: http://www.telerik.com/help/winforms/pageview-stripview-scrolling-and-overflow.html
I hope this helps.
the Telerik team