Collect evidence of relevant theoretical knowledge and practical problem-solving or research ability, a precise duty description, and records showing how the work directly supports professionals in a listed scientific discipline.
Connect each record to a required element
A course record may show knowledge; a documented project may show its practical application. Ask the employer to explain the connection between the technician’s work and the supported professionals’ scientific activity. Credentials, project descriptions and collaboration records can help establish that connection.
Supervision records are one possible form of evidence, not a separate universal requirement for daily oversight. Two practices make that connection easier for someone outside the field to follow. Ask the employer to write, for each required element, a single sentence naming the record that addresses it, and to put those sentences at the front rather than leaving a reviewer to infer the mapping from a folder of attachments.
And prefer records that were made for their own reasons over records made for the file: a project report bearing a date and the technician's name, a course transcript, a published method the technician contributed to, an internal handover document. Where the strongest available material is a description written specially, mark it as such and pair it with whatever contemporaneous record supports it, since an account presented as though it were a business document, when it was not, is easily identified and undermines the material around it. Hypothetical example: a semiconductor process technologist's file opens with five sentences mapping knowledge, practical ability and supported activity to five named exhibits, and a reviewer can check each claim in turn instead of reading the whole folder to find out what is being asserted.