Add Wife to application in Business Visa Application

[Tin88]

Hi
I recently applied business visa for myself and added my wife as a family member in the application. Unfortunately, my visa is accepted and hers got rejected.
I only attached the recommended documents in the portal which are less as compared to the main applicant.We are in the process to apply a new visa. What is the best visa to apply and what are the recommended documents to attach.

Thanks
Tin