Julia RoussinovaImmigration Attorney
You file the I-485 only if you are in the United States in another lawful immigration status (student visa, work visa, etc.) and only after approval of the I-526 petition. Your family members may file same when your I-526 is approved if they are also in the United States in another lawful immigration status. You file the DS-260 only if you are abroad when your I-526 is approved and then you consular process for an immigrant visa abroad to arrive in the United States as a conditional permanent resident. You may process at the same time with your family members, or you must process and arrive in the United States first as the principal then your family members can follow to join.