Business Visa Appointment

[tonytho]

My wife is going for H4 visa interview next month. I'm planning now to take business visa appointment for my parents a week after that.

But my friend told me that it is not safe to take appointment for Business visa for my parents when my wife visa appointment has already scheduled as primary applicant will be same for both.

The reason I want to do it around sametime is they can come with my wife as they cannot come alone.

Please let me know whether it will be problem.

[kabkaba]

There is no such thing.
What your parents need is Visitor visa and not Business Visa if they are visiting you for tourism.
Secondly, they are applying for their own Visa and hence they are their own principal applicants (each one), all you are doing is paying for their trip. There is concept of sponsoring the Visa itself.
The can apply on the same day if they want.