Quebec Skilled Immigration, who can be a deputy applicant?

Immigration is based on the family unit. A family refers to a couple and children, so the main applicant and the deputy applicant refer to the couple. The husband is the main applicant and the wife is the deputy applicant, or Transfer is also possible, mainly based on the income and management experience of the couple. If one spouse dies, then there will be no deputy applicants. Brothers, sisters, and parents cannot be deputy applicants.