Allow co-authors to chat within a document

This policy setting controls whether co-authors can use the chat functionality within an Office application to collaborate with each other when editing a document. If you enable or don’t configure this policy setting, users can chat with each other when co-authoring a document. If you disable this policy setting, users can’t chat with each other when co-authoring a document. Note: This policy setting only applies to subscription versions of Office, such as Microsoft 365 Apps for enterprise.