Chatting Within an Alliance
Click on the alliance tab. This is were you will do most of your communications with the alliance. A few options exist like Whispering, Info, Send Mail , or Ignore. A new features allows players with a position of Officer or higher talk in their own private room seperate from the rest of the alliance. Those are accessed by clicking the members name so a option window appears, then click on the option you want to use. The text within the text bar will change depending on which selection you made.
These options are the same when in the all portion of the chat window.
Other options are available to players using the LoU Tweak tool. But that's not an official EA tool so no info will be provided.