请教pjiang, xbt 老师关于DS 230 Form

I got my greencard, want to file follow-to-join for my daughter(with ex-hu*****and)

请问:
1.Do I need to fill out DS-230?
(because Instructions: Complete one copy of this form for yourself and each member of your family, regardless of age, who will immigrate with you.

2.After I824 get approved, the approval notice will be AUTOMATICLY sent to the National Service Center (NVC) for further processing?

Thanks for your answers