The Azimuth start angle 
and Azimuth end angle 
boxes enable you to specify the start and end points for the probe path of a sphere relative to the Second orientation vector of the item. For example, these azimuth angle pairs:
Azimuth Start: 0, Azimuth End: 360
Azimuth Start: 0, Azimuth End: 180
generate these probe paths:
Similarly, the Elevation start angle 
and Elevation end angle 
boxes enable you to specify the elevation of the sphere relative to the Orientation vector of the item. For example, these elevation angle pairs:
Upper elevation: 0, Lower elevation: -90
Upper elevation: 90, Lower elevation: 0
generate these probe paths:
