No. Each person must complete and sign the Application for Temporary Resident Visa (IMM 5257), as well as any other forms needed. Each applicant aged 18 or over must also complete the Family Information form (IMM 5645).
You can submit all family member applications in the same envelope with one payment receipt for the total fee for all of your applications.
Parents or guardians can help children fill out their forms. Parents or guardians must sign the forms for any children under the age of 18.