Please note: All fees for Family Class applicants must be submitted to the Case Processing Centre in Mississauga, Ontario using an official fee receipt (IMM5401).
I wonder if this requirement also applies to the CEC application with family members. For example, I am the principle applicant, and my wife is also included in the application.
that is for family class category. I believe you are not a PR yet. if you were sponsoring your wife or child then you would pay locally. Since you are applying yourself as a principle applicant you need to make one draft which includes fees for all.