After installing the Microsoft Dynamics GP Add-in for Microsoft Word you will need to add the Developer tab in Microsoft Word. The Developer tab is not added automatically and must be added through Word options.
The Developer tab contains the Field List add-in which allow you to select the XML resource to be used on the Template. The XML Resource will show the sections, fields and captions that were populated based on the Report Writer report.
The following short video will provide a visual walkthrough of adding the Developer tab in Microsoft Word 2010 and Microsoft Word 2007.