F-2 or J-2 applies to an international student's dependents and may apply visas at the same time that the international student applies for an F-1 or J-1 visa, or they may apply for their F-2 or J-2 visas at a later date. If they are granted the visa, they may enter the United States when the international student does, or they may enter the U.S. at a later date.