In a new Feature of the Day for GP 2013, Inside Microsoft Dynamics GP looks at User Defined Fields on Customer Address
Feature of the Day: User Defined Fields on Customer Address – Inside Microsoft Dynamics GP
Tips & Hidden FeaturesPayables & ReceivablesInstall, Upgrade & AdminGP 2013
Archived post from 2012. Dynamics GP and the links it points to have changed since; check current documentation before relying on version-specific steps.