Hello, i recently got back into java programming and my server owner asked me to make a plugin. Which normally i would be able to code it easy do some tests and then send him a release except now he wants a chat feature almost. I'm pretty sure the solution is obvious but i couldnt find anything to help me nor could i come up with any way to do it. So heres what he wants: do a command like /abc puts you into a group where you can only chat with others who did /abc do /abc again and it puts you back into normal chat basically like how with towny you can do /tc and do a chat with people exclusively in your town. I'm not asking you to code it for me but i dont understand how i would go about doing this, would i use HashMaps? I know the chat outputs like sender.sendMessage("Sample Text"); and bukkit.broadcast("Sample Text"); So please any help is appreciated.