It may affect availability, but it does not establish the listed profession, qualifications or other TN conditions.
Separate scheduling from eligibility
Describe the new work on its own facts rather than treating a free calendar as permission.
If the role is a general skilled trade rather than one of the specific professions Appendix 2 names, confirm honestly that TN is not available for that occupation before assuming a restructured job title or description could create eligibility. The Engineer entry expects a degree or licence; a technologist with a diploma must independently satisfy the Scientific Technician/Technologist entry, including its direct-support requirement, rather than assuming the diploma establishes eligibility. The job comes second, because the position must correspond to a profession named in the USMCA professional appendix; an inventive job title on an offer letter settles nothing until the duties are matched against a listed occupation. The category also contemplates temporary professional work for a prearranged employer: an applicant intending to work for themselves, or through a company they control where no genuine separate employer relationship exists, falls outside it however well the profession otherwise fits.