In french it's called the ANTI PATRON key, for example when you are not suppoosing to be on messenger and that your parents come in your bedroom you can touch this key so all the discussions and msn are hiden but after i don't know how to do so they come back! how can i do?
sorry for my english because i'm french.
thank you for your help

Its called boss mode in english

You can goto your Plus! preferences and then change the keys for turning on and off your boss mode along with the icon for it as well

I am guessing thats what you wanted ?? It just locks your messenger till you press those same keys again. I hope that helped. Should i tell you in more detail ??

thank you for the answer, the thing is that i press the key again msn doesn't come back...

You doubleclick the changed icon in the systray (part next to systemclock).

If that key doesn't works, try to define a status reset key.

The status reset key resets every status change Plus! made, like a Personalised Status or Boss Protection. When you press this combination, Plus! restores your status to how it was set before.

In this French screenshot: (I changed my language for this )

you see where you can do so.

I hope I was helpful.

ok thank you i am going to try but what is the changed icon?

An icon that looks like a network icon , if you hover over it it will tell you

Edit: you're welcome

ok thank you so much!