Hello! Yes, I have to no avail. What we are trying to solve for/ the ideal state is......
Once a request converts to a project, all people listed under the people tab would be auto tagged below, so someone does not have to manually tag the people who are already listed in the people tab.

From there, in 1 conversation stream, to make an internal comment, we would select private to my company and the notification would not be seen by anyone outside our company (via the update module, blue notification box, or via email notification). That way, we could have one conversation stream that had internal and external comments in it, internal comments would be denoted by the lock icon.
The value is 2 pronged, 1: to remove the need for someone to manually tag the people originally in the update who are already listed in the people tab. 2. To make sure if we selected private to my company, only people in our company would receive the notification (in any manner). I appreciate any help. 🙂