This is not possible in DxDesigner as it stands, we are working on a new product, currently in Beta testing, that might address what you're after - xSD Systems Designer
Hee hee! I did that about 20+ years ago with OrCAD. Sadly it was the only thing I really like about that tool now that I've been exposed to others.
We didn't use it to manufacture or control anything. it was just really handy to be able to open one file and then pull up the details for all the PCBAs and interconnect cables in the system while troubleshooting.