If your only question is if that approach is right, then the answer is yes.
		
		
	 
Hello house, we still having difficulty completing the student application for high school student. Who does the signature of all the IMM document.
The Mother is accompanying as a visitor. So in the family applications for the minor, the mother is ticked as accompany. The intention is to help the minor to settle down.
This are all documents it show after filling out the questinnaire
Details     Document Name     Instructions     Options
Not Provided
    Application for Study Permit Made Outside of Canada (IMM1294) (required)
(Opens a new window)
    Help - Form: Application for Study Permit Made Outside of Canada (IMM1294)     
Supporting Documents
Supporting Documents
Details     Document Name     Instructions     Options
Not Provided
    Birth Registration/Certificate (required)
    Instructions - Document: Birth Registration/Certificate     
Not Provided
    Letter of Acceptance (required)
    Instructions - Document: Letter of Acceptance     
Not Provided
    Passport (required)
    Instructions - Document: Passport     
Not Provided
    Use of a Family Member Representative for Online Applications (IMM5713) (required)
(Opens a new window)
    Instructions - Document: Use of a Family Member Representative for Online Applications (IMM5713)     
Not Provided
    Use of Representative (IMM5476) (required)
(Opens a new window)
    Instructions - Document: Use of Representative (IMM5476)     
Not Provided
    Proof of Means of Financial Support (required)
    Instructions - Document: Proof of Means of Financial Support     
Not Provided
    Digital photo (required)
    Instructions - Document: Digital photo     
Not Provided
    Request for Medical Exam (required)
    Instructions - Document: Request for Medical Exam     
Not Provided
    Family Information (IMM5645) (required)
(Opens a new window)
    Instructions - Document: Family Information (IMM5645)     
Not Provided
    Authority to Release Personal Information to a Designated Individual (IMM5475) (required)
(Opens a new window)
    
 Family Member 1 - 11 / 11 / 1978
Application Form(s)
Application Form(s)
Details     Document Name     Instructions     Options
Not Provided
    Application for Visitor Visa (Temporary Resident Visa) Made Outside of Canada (IMM5257) (required)
(Opens a new window)
    Help - Form: Application for Visitor Visa (Temporary Resident Visa) Made Outside of Canada (IMM5257)     
Supporting Documents
Supporting Documents
Details     Document Name     Instructions     Options
Not Provided
    Family Information (IMM5645) (required)
(Opens a new window)
    Instructions - Document: Family Information (IMM5645)     
Not Provided
    Passport (required)
    Instructions - Document: Passport     
Not Provided
    Digital photo (required)
    Instructions - Document: Digital photo     
Optional Documents
Optional Documents
Details     Document Name     Instructions     Options
Not Provided
    Schedule 1 - Application for a Temporary Resident Visa Made Outside Canada (IMM 5257)
(Opens a new window) 
Use of a Family Member Representative for Online Applications (IMM5713) (required) 
Is required if you have someone added as accompanying a main applicant. However, in this case the main applicant is a minor. Who will do the signature
     Use of Representative (IMM5476) (required) 
This is because, I am trying to help my aunty and her daughter - Was wondering if I should remove myself from the application so its will the mother helping her daughter complete the application.
Who do the SOP, the daughter of the Mother_