Deliver To location in iProcurement

How do other companies setup locations and tie to an HR record for delivering goods?

We are struggling because HR requires specific tax information on their locations which they tie to an employee record.  However, the locations are not specific enough for delivering goods.  For example, HR creates one location for a building and has specific payroll tax info on it.  However, for delivering goods, we need a need a location for each floor in the building.  HR won't combine the records and put the same payroll tax info on each data because they think it is creating additional work.   How do others handle this?