The process of enabling CalDAV support for your calendars is something like that.) (If you use Gmail over IMAP you may have gone through the process of choosing which labels appear as IMAP folders. Within your calendar app (on the Mac or on iOS) you can always choose which calendar(s) to show, but when dealing with Google calendar, your other calendars will only appear if they have been enabled.
If you have been trying to get your Google Calendar to sync to your iOS device(s) or your Mac, but can't get all of your Google calendars to show up, I may have the answer: Unless you have a paid Google Apps account, use to select which calendars you want to sync via CalDAV.
