Hi Mr. Eddiek,
1. Levin will have to submit all the required supporting documents which will be coming from you and herself. So you will have to send her some bits of paper works like your letter of employment, payslips, proof of accommodation, etc. She will need to gather ALL the necessary docs, then proceed to online application, pay visa application online, book for appointment online as well and then lastly, lodge her application.
2. Like Mr. Grahamw48 said its rarely that they will make an interview these days but if they do it's via phone.
3. Levin is the applicant so you need to do only one application. Levin will do that, you just have to combine your efforts in gathering the docs.
For sure someone will write on here for more clearer explanation and infos and will correct me if I'm wrong..
Good luck and God bless![]()