In Mac OS X, Calendar now uses Notification Center to let you know when events are coming up, by default. What if you don’t want these notifications, or want them only for a certain kind of event, like a birthday or timed event?
Well, using the preferences in Calendar, you can do just that, setting things the way you want them, rather than the way Mac OS X has them by default. Heck, you can even turn them off completely. Here’s how.