Aveneer Signature is a separate module that allows defined Signing Parties to place their signature on a document before it is returned to Salesforce. For Aveneer Signature flow to be initialized, two conditions have to be met: 

• Signature Tokens detected in the uploaded docx template.
• Branch Config record related to the Template Configuration record.

Once the conditions are met and Users attempt to generate documents, Signature Flow is initiated.

It should be noted that currently Aveneer Signature flow does not support merged documents and individual documents protected with a password.