Use accurate records of completion and relevant evidence of what the employee can actually apply.
Connect the course to the work
A certificate title alone may not explain the knowledge. Identify the practical capability and its use in the planned US duties.
Artefacts generated by the proprietary work: design documents, release notes, revision histories naming the specialist, internal training records, and customer contracts describing delivered systems. The design and test record with authorship identified, internal procedures and work instructions, training material, any patent or trade-secret registers, and payroll records that establish continuous employment. Internal method documents with revision history, the technologist's training and teaching records, examples of work product that depended on the protocol, and a written comparison against standard published methods. Describe the protocol in a summary that explains its proprietary elements without disclosing them, attach the version history and training records, and offer the full document for inspection if requested. Contemporaneous records: internal specifications with the transferee named, development and validation reports, revision histories, training materials the transferee wrote and problem reports the transferee resolved. Almost everything useful here already exists inside the employer and costs retrieval time rather than production money: the controlled procedure with its revision history, the training matrix, signed work records, a letter from whoever supervises the process. Useful material can include internal training paths, product manuals not generally available, implementation histories, project records, peer comparisons, and statements from knowledgeable managers.