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I'm going to attend a conference in the US and am applying for a B1 visa. While completing the DS-160 form I was asked if I will be accompanied by someone, I entered the name of my wife. Now I'm at the step of paying for the fees and scheduling an interview, and I don't think that I'm applying also for my wife's visa (there's no option to enter my wife's information such as passport number, etc...).
How should I proceed to apply for a visa for my wife, too?