The five manuals are tools used by TS 16949 system, so I think the training of the five manuals is: the training 1 hour needs the teacher to lead the implementation for 2-3 hours; Just need to have a conceptual understanding of internal auditors; For engineering designers, it is necessary to deeply understand the five tools; Technicians need to know how to use these five tools and who to report to. Records are very important.