Select Define Work Area and the system will prompt you to create a Work Area, or select one that has already been created.
Select Define Work Area and enter the Abbreviation and Description of the Work Area. When you select OK the command line will prompt “Upper left corner of the Work Area or <P>olygon:”. Either hit Enter to define a“window” of a Work Area, or type “P” for polygon (then Enter), and draw a polyline area. The polygon definition is the most common and flexible method.