Hi Dani,
You can handle the OnClientAppointmentResizeStart and OnClientAppointmentMoveStart and use the following code to achieve this scenario:
Hope this will be helpful.
Kind regards,
Plamen Zdravkov
the Telerik team
If you want to get updates on new releases, tips and tricks and sneak peeks at our product labs directly from the developers working on the RadControls for ASP.NET AJAX, subscribe to their
blog feed now