At an airport the checkin and gate staff ensure the smooth and accurate processing of travellers. At a swim meet their equivalents are the Marshals and Check Starters. These pivotal positions not only ensure the smooth running of the meet, but they also create a positive environment for swimmers, and enable accurate recording of results.
Ideal for absolute beginners. Complete in just over an hour, online here right now and free.
https://nswtraining.swimming.org.au/courses/marshal-check-starter/