According to ISO 19011:2018, clause 5.3, the person responsible for managing the audit programme should determine the resources necessary for the audit programme, such as the audit team members, the budget, the time, the tools, etc. The audit resources should be sufficient and appropriate to ensure the quality and effectiveness of the audit programme and the audit results. The audit resources include the following elements12:

Essential resources: These are the resources that are required to conduct the audit programme and the individual audits, such as the audit documents, the audit methods, the audit tools, the audit schedule, the audit budget, etc. The essential resources should be identified and allocated based on the audit objectives, scope, and criteria, and the availability and cooperation of the auditee. The essential resources should also be reviewed and updated as necessary to reflect any changes or deviations in the audit programme or the individual audits.

Competent personnel: These are the audit team members who have the appropriate knowledge, skills, and experience to conduct the audit effectively and efficiently, and to provide credible and reliable audit results and recommendations. The competent personnel should include the audit team leader, the auditors, and any technical experts or observers who support the audit team. The competent personnel should be selected and appointed based on the audit objectives, scope, and criteria, and the specific competence requirements for the audit programme and the individual audits. The competent personnel should also be independent and impartial, and avoid any conflicts of interest or self-interest that may affect the audit results or the audit decisions.

References:

ISO 19011:2018 - Guidelines for auditing management systems, clause 5.3

PECB Candidate Handbook ISO 27001 Lead Auditor, page 19