Modifying Public VO's for Private Use?

[LabSimBuilder]

I'm exploring the capabilities of the standard public VO's. For example the Pharmacy Cart could be used to transport the disposables into the lab environment. After working with it for a while I realized the Pharmacy Cart Drawer VO (which can be made functional in the cart) doesn't have any internal hitboxes. The top of the cart also doesn't have any hitboxes either. Is there a way to add hitboxes to public VOs, customizing them to a degree for our own personal use? It would save a lot of time in asset creation if this functionality does not exist at the present time , to add it. Maybe I'm missing something (it wouldn't be the first time! LOL)