To set the coordinate system from the Coordinate System
tab:
Click the Coordinate System tab to display the Projection pane.
Click the Down Arrow button and select a projection from the list.
If you want to change the position of the central meridians
and parallels, enter the values for the parameters, or click the button and then click the position in
the Map View where you want the new projection center to be.
Select Advanced, if you want to use the advanced options.
Set the properties of the selected projection, if required.
If the coordinate system you have chosen allows it, click
the Down Arrow button and select a datum from the list.
Click the button to display the datum properties
and set them as required.
If the coordinate system you have chosen allows it, click
the Down Arrow button and select an ellipsoid from the list.
Click the button to display the ellipsoid properties
and set them as required.