Basically this is /mgd (/msg or /mad) but for criminals' and cops' teams, right?
This Feature is lot helpful and I give it Positive But ! : - it will be better if only Higher Ranks like ( Chief - Boss - Groups Leaders ) < can use it to avoid anyone try to sabotage by Trolling or spam with it .- or Only players are more than 500Hours or 35-40 levels can use it - and make who get Mute be unable to use this feature - and make it blip for 10-15 sec and you can use it again after 30 sec ( just some ideas )