I want to show the new appointment Dialog (advanced) (see pictures attached) rather than the “inline” 3 option ( Save, Cancel, Options) dialog, when you DoubleClick on the RadSchduler to create a new appointment.
I finally found the solution. The scheduler has a property called StartInsertingInAdvancedForm. If this property is set toFalse (the default), the in-line editor appears: If the StartInsertingInAdvancedForm property is True, the advanced insert form appears instead.