Chart object
Rotates new bar charts 3º horizontally by 2º vertically when a component is added to the X axis. If a component is added to the Z axis, a rotation of 15º horizontally by 20º vertically is used. If this option is disabled, the rotation in the Horizontal\Vertical rotation degrees fields is used.
Read-write, boolean
This example shows how to enable AutoRotate (Property):
ActiveDocument.Sections["Chart"].AutoRotate = true