Amada Wong explains how to Save a TON of time by using User Copy in GP 2010
Save a TON of time by using User Copy in GP 2010 | onza blog
Install, Upgrade & AdminMicrosoft & the GP EcosystemGP 2010
Archived post from 2012. Dynamics GP and the links it points to have changed since; check current documentation before relying on version-specific steps.