Microsoft is adding to SmartList Designer with R2, specifically: Microsoft Dynamics GP 2013 R2 Feature of the Day: SmartList Designer Go Tos
Microsoft Dynamics GP 2013 R2 Feature of the Day: SmartList Designer Go Tos – Inside Microsoft Dynamics GP
Tips & Hidden FeaturesReporting & BIGP 2013
Archived post from 2014. Dynamics GP and the links it points to have changed since; check current documentation before relying on version-specific steps.