This example demonstrates how to customize the advanced template using the supplied
user controls, which can be found in the folder of your local installation of Telerik.Web.UI
suite ->Live Demos\Scheduler\Examples\AdvancedFormTemplate .
Double click on an appointment or a time slot to open the custom advanced form.
You will notice that it resembles very much the default advanced form, but it also
has a color picker that allows you to specify the appointment's BackColor property.