Typically, when you have created an object yourself using the ArchiCAD automatic object-making functionality (Custom Component method or 'Save 3D model As'), the Floorplan symbol is static. You can modify the 2D symbol, but it cannot be Story-and Cut Plane-sensitive. With the Object Slicer the selected object will be cut precisely at the current Cut Plane height.
Functions:
The floor plan display with the standard ArchiCAD methods: Projected / Projected with Overhead / Cut Only.

The projection can be set with: Entire Element / Floor Plan Range / Absolute Display Limit.

The ability to show the element on desired stories only.

The ability to show the element on desired stories only.
Rotation of the object in 2 axes.
Full control of pens and fills.

References:
"I'm very happy with the Mesh Generator and Object Slicer ... Thanks for your amazing job."
José Gomez / Garquitectos / www.garquitectos.com