RadRotator support custom buttons for rotating the items, but if I understand you correctly you wish to achieve the same functionality as the web scroller - e.g. when the button is clicked, items to be rotated at higher speed.
If this is so, RadRotator does not support this functionality, but I logged it as a feature request for a new RotatorType and we will implement it in the near future.
Your points were updated for bringing this feature to our attention.
the Telerik team
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