Takeoff Tab Chat Screen For Estimators While Working Together

Perhaps this exists but I cannot find it. It would be nice for there to be an option to pull up a chat window on the takeoff tab so that when multiple estimators are working on the job at once, we can have a quick chat with someone else working on the job about a detail, scope, etc as sometimes the estimators working on the job are in different locations and may not have the ability or need to call for something small.