Hide the Delete Button of Appointments
One could hide the Delete button of Appointments either by setting the AllowDelete property of RadScheduler to false or by including the following CSS style on the page where the control is located:
/* For Classic RenderMode */
.rsAptDelete {
display: none;
}
/* For Lightweight RenderMode */
.RadScheduler .rsApt .rsAptDelete {
display: none;
}