The initial research of the implementation of this functionality showed that it could be achieved, however, with difficulty and not at 100%.
Fortunately, RadScheduler has undergone serious changes in its rendering mechanism as well as in its functionality since its previous versions, before Q3.2008.
With the current rendering of the control your goal could be easily achieved. What is more, it could be a default, built-in functionality. We are currently working on incorporating it in RadScheduler. Hopefully, it will be available with the next Service Pack for Telerik.Web.UI.
Please excuse me for the delayed answer. I hope you are still looking for this functionality and you would have the opportunity to benefit from it once it is released.
Thank you in advance for your understanding.
the Telerik team
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