The principal's authorized period governs. A spouse and unmarried children under 21 may qualify for TD status, and their dates cannot extend past the principal's. Families often arrive later than an instructor who starts with design work, which is workable, but each person's own status and steps need confirming.
Coordinate separate arrival and status records
If the instructor enters first to begin course development and the family follows before the term, prepare the dependents' documents on their own timeline and by each person's nationality, since the steps differ. TD status permits study, so school enrollment is generally contemplated, but it does not authorize employment, including remote or unpaid work. A spouse intending to work needs a separate authorization discussion.
TD eligibility for a child depends on being unmarried and under 21, assessed for each person individually, so a household with an older teenager needs a plan for what happens when that threshold is reached. Households where both people write or consult often assume remote clients fall outside the rules. Use the child’s official birth record to establish the date, then compare it with semester dates and the current status record. A spouse or unmarried child under 21 may seek TD classification where eligible, but TD dependants cannot work.