Papers they ask to submit differs from VAC to VAC. I was asked to submit consent form, Appendix B from as well. Mine VAC asks to send fees in Cash in envelop along with passports but many other VAC send payment link to transfer the processing fees. Also, mine didn`t ask for courier return label but many do ask to submit that as well. VAC fees have been revised from November. Please check that. Its better to contact VAC once before sending all documents. What`s your country of residence? If I know anything abt there, I will let you know.
I submitted all papers by post to VAC Tokyo. They forwarded to IRCC Manila, Philippines. They just took 2 days to issue COPR and dispatched back to VAC Tokyo and VAC Tokyo send all papers to me. Whole process took only 9 days.