Do not assume the first arrangement covers the second. Have the additional employer and applicable process assessed before relying on the work.
Keep the permissions distinct
A compatible schedule is not itself authorization for the additional assignment.
Allow extra time compared with a straightforward single-employer case, since the structural review itself takes real work before any filing timeline starts. Often the state regulator, because practice cannot begin without whatever licence or authorization it requires, and that process runs independently. Allow time to prepare the new employer's evidence file, complete the correct authorization step, and confirm the result before setting a start date. A Canadian citizen applying in person pays the border charge; an employer that prefers a petition pays the filing fee, with premium processing available at additional cost where a start date is tight. Work backward from the last fact that could change the classification: finalized duties, a required credential record, the employer letter, or a changed client assignment. The period granted relates to the employment described in the employer's letter, and the officer decides the admission period; it is not set by the applicant's preferred schedule.