My wife and are in Danang Vietnam and we are soon going to apply for the DTV. Here it's all done online.

So my wife is my dependent. and I understand I first need to apply for myself only and get the visa, and only then she can apply, right?

So this my question:

Do I need to specify in my own initial application that my wife is going to apply after me as my dependent, and to already supply them with our marriage certificate and sponsorship letter confirming that I am her indeed her sponsor?

Or all that stuff needs to wait until only after I get my visa and she submits her own application?

Many thanks

Fyi, @Immi Chiang Mai, if you switch 1yr extension from married to retired, they still ask you the first time for an actual marriage certificate!, had 3weeks left on old extension, new retirement extension starts right away the day you apply, no add on, anyway, easy procedure (for u and the officers) 😅