Disabling chat

how to disable chat for every game in turn based chess?thanks

If you are talking about in a live chess game then you press the small lettered, blue writing, in the upper right-hand cornor of where you see the chat remarks, that says, "Disable chat".  (AT least I think that it is blue.)  If you are talking about the corispondance games then you click on the chat button, (it is second to the right on the row of "moves", "chat", "Details", and "Notes."  Click on the "Chat" tab then in the upper right of the area that you can see the chat remarks, (just a tad outside of the square) is a hyperlink of blackish/grey words that you can click on.  Both will tell you that "chat has been disabled".  Hope this helps!

I dont want to turn  the chat off for every single game in turn based =online=correspondance games.there must be something to do as a whole!

Well this dosn't turn of chat for all games, you can do this for every sepperate game that you would like to.