Dependent children
If your spouse has dependent children, they must be included in the PR application, even if they are not coming to Canada. They will need to have medicals as well to keep the option open to sponsor them later. The only way that immigration will accept the application without those medicals is if the children are no longer minors and refuse to have it or if the children are in the full custody of their other parent who refuses to make them available for medicals. In that case, your spouse needs to sign a statement stating that they know that they will never be able to sponsor these children to Canada in the future.
Dependent children are classified as single and either under 22 years of age or if they are older, they must have been full time students since before age 22 or dependent on their parent due to a disability or medical problem.
Refusals due to income and medicals
You will be asked to provide information about your income but you will not be denied to sponsor your spouse and dependent children because you do not make enough money. It is possible though that if you make absolutely no money at all that immigration may ask you how you plan to support yourselves.
Spouses and dependent children are also exempt from the clause about excessive demand on health care so you do not have to worry about them being refused for that reason.
My question for the dependents and family requirements. Does the dependent require a birth certificate and a passport as well? Our dependent is 4 years old.
Do I also need to supply all of the cousins/sisters/brothers details in the IMM5406? We do not know them or know where they reside. So this makes things difficult to fill out. Should I leave this blank? Fill in what I can?
thanks