There is no such thing as horizontal sections (if that is what you are after).
They are simply floor plan views.
In your navigator, you will see all of the storeys, clicking each one will show the plan of that storey.
There is also a Floor Plan Cut Plane setting (in Document menu) that allows you to set the cut plane height in the floor plan view that will affect the view of elements that are height sensitive.
One of the forum moderators.
Versions 6.5 to 25
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