I'm sorry, I'm not sure I know what you're asking for here. If you mean you want to arrange the order that the menu options are offered in the subscriber's mailbox conversation, you can use the Custom Key Map tool for that if you're on a recent version of Unity or Connection. There's a help file and training video for the use of this tool on its home page here:
http://www.ciscounitytools.com/App_CustomKeymap.htm
if that's not what you mean, can you try and clarify what you want to do? Also, which 4.x version? 4.0(1) through 4.1(2) have shipped, there are many differences.