1. On the Markup tab, select Coordinate System. The Construct Coordinate System dialog box opens.

2. In the graphics area or the Structure Tree, select a reference for the coordinate system.

3. To change the orientation of the coordinate system by resetting its axes, select CSYS axes. Type the Offset values, and then click Reset. The view updates to the new coordinates.

4. To change the orientation of the coordinate system by referencing entities in the design, select References and then select reference entities for two of the coordinate axes.

5. Click OK.