https://www.acacamps.org/blog/step-your-hiring-game-attracting-interns-through-field-experience-manual

Here are some easy steps to get you started putting together your own field experience manual.

https://www.acacamps.org/article/camping-magazine/staff-recruitment-assessing-your-needs-making-connections

Staff recruitment — whether you call it a plan, process, or task — is an ongoing activity that needs constant attention, documentation, and planning.