DarkRP OOC Tags

[Garrus]

What I am trying to do is this, I'm not even sure where to put this or where to edit it if it exists. For example. You type // in chat, and it only says your steam name with a time stamp at the very beginning. Time - Name: Message. What I want to do is make it so when you type // It says
Name [OOC]: Message. I'm not very good with creating lua from scratch or even know where to put something related to this. I'd like the same to be done with the Mayor faction as well so when the mayor types /broadcast message, it doesn't appear as Name: Message. It's very confusing for everyone. Thanks.