by omission CardDav iphone

I have a debian linux server, which is served by shared calendars, and set up a new calendar on my iphone 4s successfully, without errors.

I can not stand this calendar by omission, because I only leave work, home. Do not show me any other calendar.

As I try to create a task, calendar event, does not show me the calendar CaldDav just set, only work or home calendar.

Because the new calendar CaldDav is not deployed?