Create projected 2D views of assemblies

I'm working with colleagues who are using AutoCAD and one of their uses is to have building floor layouts with projected top-down views of the footprint of desks and equipment.

I have modelled a set of desks in Creo and need to figure out the easiest way of creating a DXF footprint.

Is there an automated way of doing this? For the moment, I can only think about creating a sketch on the floor plane referencing the outer edges of my assemblies but that's quite a time consuming process.

Thanks