Chains level Document Templates are shared across all Organizations, with the goal being to ensure that all Users have clean, professional and appropriately branded Documents. These should not be modified unless it is to suit a Chain-wide need.
If you are a Chain Admin user, it is possible to Clone a Chain Document Template into an individual organization if needed.
Select the Chain from the dropdown at the top of the page
Click Templates & Files
Click Document Templates
Hover over the desired template & Click Clone
Click Clone to Confirm
Scroll to Permission at the top of the page
Click on Chain
From the dropdown generated, select the Organization you wish to connect the Document to
Click Save