How do I connect my Zimbra calendar?

To connect your Zimbra calendar to FreeBusy:

1. Go to sign up.
   Or link new calendar if you're already signed in.
2. Provide the email address associated with your Zimbra calendar.
3. FreeBusy will try to detect your calendar provider.
   You can also pick Zimbra manually.
4. Provide Zimbra Webmail Address, username and password.
5. Click Sign in.