Drag-and-Drop Operations
Drag-and-drop operations enable you to change an appointment time interval, if an appointment is moved along the time cell area:
If you press ESC before dropping the appointment, all changes are cancelled and the appointment returns to where it used to be.
You can also change an appointment’s type to all-day and vice-versa by dragging the appointment between the all-day area and time cells.
In grouped view, when different resources are represented by different columns, dragging the appointment to another column automatically changes the associated resource.
Limitations
Dragging recurrent appointments to different resources is not supported.