It can change household planning, but it does not create a different dependent category. Eligible family members must address their own TD requirements. TD does not itself permit employment, so do not build a spouse’s plan around working while accompanying the principal from site to site.
Plan a household base and accessible records
Determine where the family expects to live and who will have copies of the principal’s current immigration documents while the worker travels. If family members arrive separately, they should have the evidence needed for their own applications and admission, including current principal-status evidence when joining later. School, insurance, and temporary housing decisions may depend on the travel pattern, but these practical arrangements do not establish immigration eligibility or expand the worker’s authorization at additional sites.
Sequence the household decisions so the reversible ones come first. Confirm the principal position and expected admission before committing to a lease, a school registration or the sale of a home, because each of those is difficult to unwind. TD dependents may study but are not authorized to work, so a spouse employment plan cannot form part of the first stage at all; if the household needs a second income, that belongs in the assessment before the move rather than after it.
Hypothetical example: a family expects to settle near the principal main office while the principal travels to a second site each month. The order that protects them is to confirm status, then choose the base, then register for school, then decide what to do with the Canadian home. Keep copies of current principal status evidence with the family, since a member joining later will need them at admission.