AFK as a Mode, similar to muting and deafening

I would like to see AFK as a Mode to turn on, like Muting or Deafening yourself. You would push an AFK Button next to mute and deafen and then have a small popup asking you how long you will be gone. You can set a time or leave it as is. Then, when another user hovers over the AFK symbol behind your name in a vc, it would tell them how long you said you will be gone.