Enter the desired latitude and longitude values in decimal degrees
for the circle center. The previous latitude and longitude values
associated with the field are displayed when the entry screen is first
displayed.
Save the values by selecting Accept. The Circle Tracks are created
automatically with the Track Spacing defined in the Setup Wizard.
It may be necessary to line the vehicle up on the center
pivot tower track or use center shift track to get the tracks lined
up with the vehicle.