Controlling the User Coordinate System (UCS)
To shift the XY plane
- From the Tools menu, choose UCS. Then choose 3 Point.
- Specify an origin point for the new UCS.
For example, in a large drawing, you might specify an origin point near the area in which you want to work.
- Specify a point to indicate the horizontal orientation of the new UCS. This point should be on the positive portion of the new X axis.
- Specify a point to indicate the vertical orientation of the new UCS. This point should be on the positive portion of the new Y axis.
The UCS, including grid, shifts to represent the X and Y axes you have specified.


UCS toolbar: 
Command line equivalent: UCS