Real ID Appear offline or turn on/off ingame.

Title say it all, sometimes im bored to always talk to someone or receive a wall of texts from <person>. I dont mind sometimes but anyways, I just want the option to appear offline in real id and friends from real id cant send messages to me or the option to turn real id on/off ingame.

*I searched "real id offline" "real id hide"... but search didnt find anything so im creating this.*