To Create a Section Object on a Preset Orthographic Plane
Create section objects that are aligned to a specified orthographic orientation of
the current UCS
You can align section objects to a specified orthographic orientation of the current
UCS, such as front, back, bottom, top, left, or right.

- Click Home tab
Section panel
Section Plane. Find
- At the Command prompt, enter o (Orthographic).
- Select an alignment option.
The new section object intersects the center point of the 3D extents of all 3D objects
in the drawing. It is placed on the selected orthographic plane. Live sectioning is
turned on.