NIS for Mac Update automatically?

I use both NIS for Windows and Mac. On the Windows 7 computers, NIS updates on its own initiative, but on my MacBook, it seems to update only when I click on Live Update>>Update Everything Now. Is there somewhere I need to place a check mark to enable auto-updating, or is this simply the way it is? Thanks.

I use both NIS for Windows and Mac. On the Windows 7 computers, NIS updates on its own initiative, but on my MacBook, it seems to update only when I click on Live Update>>Update Everything Now. Is there somewhere I need to place a check mark to enable auto-updating, or is this simply the way it is? Thanks.