Enable Google Now with Google Apps for Business account: "If you came here, you might be as desperate as I was, so here is the path to enabling Google Now:
Launch your Google Apps control panel by going to http://google.com/a/.
Click Organization & Users.
Scroll all the way down until you reach Google+.
Click on the Configure premium features link.
In the left pane select Mobile.
Scroll all the way down to Android settings.
Check the boxes for Enable Google Now and the optional Enable Lock Screen Widgets.
Do not forget to hit Save."
'via Blog this'