A new command, whereby when you use it, only those seated at a bar, table or other object which you can conjugate on.
It could work such as this:
tt Blah blah blah
At the bar person says blah blah blah
It could also be worked so that you could dirrect speach using it ,as in tt `person
I am a bad explainer of things, one might exist, but none of the players knew about any thing like it.
In sum: It would allow private conversations, shady deals, whatever to go down without anyone being able to hear, if they are hiding in the room.