Suggestion for a new chat command

Hello, i would like if is possible to add a /busy

It's like /afk but will not turn off if char plays.
Maybe autoturn off if the char enters HO?!

Reason:
With /dnd you dont get chat or pm's while playing but you could watch it after /busy is done.

Chat is possible to disable by registers if need, but you cant add a response msg.

Even if someone want buy anything from you.


Regards