To define multiple cut planes within a plan view, use plan regions.
A plan region defines a cut plane at a different height than the cut plane that is used for the rest of the view. Plan regions are useful for split level plans or for displaying inserts above or below the cut plane. Plan regions are closed sketches and cannot overlap each other. They can have coincident edges.
Note: Plan regions are used to control the appearance of hosts and hosted elements, primarily windows and doors in walls, when their elevation affects whether they are visible. Plan regions cannot be used to control the display of MEP elements.
Example
The cut plane
for a plan region in an elevation
Plan region in a floor plan
Plan regions are view-specific. You can copy and paste them into the same view or different views. When you copy a plan region into a different view, the view range settings are maintained from the previous view.
Plan regions export and print when they are visible in a view.