The word templates installed on a Cinnamon server can be managed from the Admin UI (needs admin credentials). Please refer to the Administration Guide.
Generally every report type references a “main” word template. This template’s styles have precedence over any “additional templates” styles. The main word template also defines
all paragraph styles
the page setup (margins, etc.)
schemes
Additional templates can contain styles like
Table styles
Chart styles
Content styles
Layout styles
Contact styles