还是说等排期到了要面签了，再提交配偶跟小孩的资料？
弟弟当时是单身没小孩，现在己婚有两个小孩。
-When the priority date is current (排期到了) , NVC will contact you and then, you can create account for your brother and add his wife and kids to the beneficiary as his derivative following the instructions in this website (read "How do I add a derivative family member to my case?" part):
You may also contact NVC for their suggestions at that time.
妹妹当时有两个小孩但当时还没做结婚证书，但申请妹妹时有在表格上填上小孩的名字，没填小孩父亲的名字。
-If your sister's husband wants to immigrate together with your sister, you can do the same way as I mentioned above for your brother.
这里先谢谢。
