When working in the conceptual design environment in a 3D view, use the Set tool to select a 3D work plane to use when creating part of the design. Use the Show tool to display or hide the active work plane.
If you are working in a 2D view in the conceptual design environment, see Setting and Showing the Work Plane for instructions.
To set the work plane
To show the active work plane
To hide the active work plane, click Show again.
Now you can perform work relative to the active work plane.