Does anyone know how to fill out form IMM 5406? I want to sponsor my mother. I have two married sisters. Do all 4 of us have to fill out the form as the Instruction guides says that all children over 18 years of age regardless of Canadian status should fill it out. Also, we are not dependent children to our mother, but the form says "all dependent children". If so, in Section A, if my sister let's say has to fill out the form, she will put her name, but the relationship will show as " applicant" ? This is so confusing. Can anyone help?