Confused about sponsorship forms - Please help

[wethenorthday]

Hello forum seniors & members,

I am a Canadian citizen who recently married someone who came to Canada as a visitor and has a child aged 20 studying in Canada.

I am slightly confused with the forms I need to complete to sponsor my wife and her child. I filled in the following forms.

1. Document checklist
2. Application to sponsor, sponsorship and undertaking IMM 1344 - for wife
3. Generic Application form IMM 0008 - for wife
4. Additional family information IMM 5406 - for wife and child
5. Schedule A Background Declaration IMM 5669 - for wife and child
6. Relationship Information and Sponsorship Evaluation IMM 5532 - for wife

My doubt is if I should fill in IMM 1344, IMM 0008 and IMM 5532 for my wife's child as well. I got confused when I read this from the IRCC website

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If you’re sponsoring dependent children

• If the principal applicant is a dependent child, including someone younger than 18 years old, you must submit the Additional Family Information [IMM 5406] (PDF, 570 KB) and list them as the principal applicant. As the parent/legal guardian of the principal applicant who is under 18 years of age, you’ll sign all the forms on their behalf.
• If sponsoring more than one dependent child as a principal applicant, make sure you submit separate complete applications for each child (i.e. each child should be listed on their own Application to Sponsor, Sponsorship Agreement and Undertaking [IMM 1344] (PDF, 478.72 KB) and Generic Application Form for Canada [IMM 0008] (PDF, 553.83 KB)), and Schedule A – Background/Declaration [IMM 5669] (PDF, 776.4 KB).
• If sponsoring a dependent child (under the age of 18) and they have another parent who is not immigrating to Canada, the parent/guardian applying from Canada must submit a signed copy of the IMM5604 Declaration From Non-Accompanying Parent/Guardian For Minors Immigrating to Canada (PDF 609.2 KB). This form must be accompanied by a piece of photo identification from the parent/guardian who is NOT accompanying the minor to Canada. In situations where having this form signed from the other parent is impossible (i.e. parent’s whereabouts unknown), a letter of explanation must be included with the application. An officer will review this explanation and advise you of any next steps.

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I am guessing that since my wife is the principal applicant, I don't need to fill in separate forms apart from additional family information and schedule a background declaration. Can senior members confirm this for me? Thank you.