This is stipulated in ISO/KOOC-0/90/KOOC-0//KOOC-0/standard: "7.4 education, work experience, auditor training and auditing experience 7.4./KOOC-0/auditor c) They should have completed the auditor training, which is helpful to obtain 7.3./KOOC-0/. This training can be provided by auditors' organizations or external institutions. "
So you can't find it anywhere. If you want to participate in foreign training, you can find out which institution has a better training level and just sign up.