The GP team is here with their first Microsoft Dynamics GP 2015 Feature of the Day: Workflow GL Batch Approval
Microsoft Dynamics GP 2015 Feature of the Day: Workflow GL Batch Approval – Microsoft Dynamics GP Community
General Ledger & FinancialsInstall, Upgrade & AdminTips & Hidden FeaturesGP 2015
Archived post from 2014. Dynamics GP and the links it points to have changed since; check current documentation before relying on version-specific steps.