Canadian citizens/permanent residents are able to sponsor their parents and grandparents to become Permanent Residents of Canada and who may eventually be able to apply for Canadian Citizenship.
You can sponsor your own parents and grandparents, related by blood or adoption.
If your divorced parents or grandparents have a current spouse, common-law partner or a conjugal partner, these people become dependants on the application and can immigrate to Canada with your parents and grandparents, if approved.
In the application, you can include your brothers and sisters, half-brothers and half-sisters, or step-brothers and step-sisters only if they qualify as dependent children.