A spouse or eligible child in TD status may study, but TD itself does not authorize employment. Before planning the household move, identify each person’s citizenship and the entry documents required for their situation.
Ask what each family member actually needs
Make a separate checklist for each family member rather than treating the principal applicant’s file as the whole household file. Ask the intended school which enrollment and address records it uses. A spouse’s wish to work needs its own lawful authorization plan; the fact that another family member can attend school does not supply that permission.
Nationality drives the paperwork more than the relationship does. A dependent who is not a Canadian citizen may need to obtain a TD visa before travelling, while a Canadian citizen dependent generally seeks admission directly, so confirm the applicable procedure person by person instead of inferring it from the principal's route. Dependent status also runs no longer than the principal's, which makes an extension one household exercise rather than two.
Hypothetical example: an animal scientist's household includes a spouse holding only a third-country passport, turning what looked like a single admission question into two with different lead times and different documents. Confirm too whether each dependant will travel with the principal or follow later, since a dependant seeking admission before the principal holds status generally has no basis to be admitted in that category, and the order of travel is easier to arrange than to correct.