Jeff Soelberg does a great job explaining Minimizing the use of ‘sa’ in Microsoft Dynamics GP
I’m going to save myself some work and just point you to his document.
Weekly Dynamic: Minimizing the use of ‘sa’ in Microsoft Dynamics GP
Tips & Hidden FeaturesInstall, Upgrade & Admin
Archived post from 2012. Dynamics GP and the links it points to have changed since; check current documentation before relying on version-specific steps.