There are two approaches in order to achieve the desired result
- First approach (recommended in your case)
- Set the RadRotatror's RotatorType property to SlideShowButtons
- Set external buttons to the control using its ControlButtons inner property
- Second approach is to use the client-side api of the control (as suggested by Princy) and implement your custom behavior. I do not recommend this approach in your case, however, because I believe that the first one will fit your needs and there is no need to implement a custom solution.
the Telerik team