I have to agree with Terry. What MS is trying to do with OLE Document Attach is WAY COOL in GP 2013 R2!!!
OLE Document Attach is WAY COOL in GP 2013 R2!!! – Dynamics GP Support and Services Blog – Microsoft Dynamics GP – Microsoft Dynamics Community
Microsoft & the GP EcosystemGP 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.