There are two methods for navigating around the pages in the GroupBarCheckButtonOutside mode. The default is the context menu and the other is using next/previous actions.
Context
The default mechanism for navigating to pages is use of the Context button on the right side of the control. Here you see the menu showing with the available choices of pages.

Next & Previous
Alternatively you can change a single property and have the Next and Previous buttons displayed instead. Note that these buttons do not cause any change in selection but instead scroll the displayed check buttons. Here is the appearance with the buttons showing.

Once the Next button is pressed the check buttons scroll from right to left in order to show some more options. You can see the change here.

If you really do want the buttons to change the selection instead of scrolling the check buttons then you can do that as well. You just need to alter two properties, one for each button, and the action will change to page selection.
Animation
Althought I cannot demonstrate it on here the check buttons animate across the bar as the next and previous buttons are used to scroll. It also animates whenever the selection changes, either becaues of the user or a programmatic change. If you prefer to turn this off then just set False to the BarAnimation property.
Visual Hints
Another useful feature that improves usability is the way that selecting a page will move that page a little inside the edge to make the next check button visible. For example, here you can see that the mouse is hovering over the Signature button.

Once the check button is pressed the check button is scrolled so that it is fully displayed. But rather than just bring the check button into view it moves it far enough to see the start of the next button as well.

This makes it easier to click on successive buttons because the next one is always shown and so can be clicked on.
RightToLeft
I have not forgotten about providing support for international applications. The control honors the RightToLeft and form level RightToLeftLayout propertis.



















