Use an accurate description of the activity, who benefits and the employer’s actual proposal.
Keep the purpose explicit
Do not describe work as a simple meeting if the intended tasks are materially different. The evidence should support the actual activity being assessed, not a more convenient label.
The letter should identify the U.S. employer, state that the position is that of an agronomist, describe the professional duties in specific terms, give the expected duration and salary, and confirm the applicant's degree. The contract including its renewal and termination provisions, an employer letter describing duties and the current period, and the credential evidence the listed profession requires. Where an agency and an end client describe the assignment differently, ask them to reconcile the description rather than picking whichever version reads better. Ask the employer to avoid two habits that create problems: padding the description with duties from other roles in the group, and describing the position as a contract engagement because that is how the group pays other consultants. The point of alignment is the description of duties: the letter should not describe work the licence does not yet permit, and any staged arrangement should be described accurately with the dates on which each stage begins. Keep originals or reliable copies of education and licensing evidence, and obtain a concise employer letter that states duties, pay, location, and duration.