Allow an employer contact to be assigned to multiple employer records or add buildings/locations to employers

Since each employer record is an individual location that could be a part of a larger business, employer contacts could span multiple employers. Currently the same data would need to be entered 4 times if an corporate contact oversees 4 locations.

Alternatively, there would need to be a way to add locations/buildings to an employer record. Then link an employer contact to one or more locations/buildings.