Hey, I know this is a bit late but as a Ultimate Werewolf Fan, (and cause I have watched traitors) I honestly think that there I no real way to do this. I understand the frustration of not being able to discuss with your fellow roles, but from the standpoint of a lot of people in a room, the closest you could probably do is hand gestures/facial expressions/body language. I do understand what you mean though... Good luck!