This option is available only when creating workplanes based on 3D elements in the ways described above. To modify the origin point resulting from the workplane construction, you can use the option:
<O> Define Workplane coordinate system
After that, the options will appear in the automenu for defining 3D points, whose projections on the workplane being created, will define the position and orientation of its local coordinate system axes:
<1> Select Point that defines Workplane Origin
<3> Select Point of X-axis direction
<F> Eliminate Workplane coordinate system definition
The option allows selecting a 3D point, whose projection on the workplane will be considered the new origin. The option allows selecting a 3D point, whose projection on the workplane will be defining the direction of the X-axis of the plane coordinates. The point selection can be undone using the option .
To exit the mode of defining the plane coordinate system, use the option:
<Alt+Down Arrow> Return to previous mode