No one has all of the recommended attributes. I don't know how you can be sure which of the attributes a candidate has until you've seen them in action. Do you know of a way?
Admittedly you’d have to get to know the candidates first but it may also be wise to allow some self deselection for your volunteers by publishing and discussing the recommended behaviors of your auditors:
- ethical
fair, truthful, sincere, honest, and discreet
- open-minded
willing to consider alternative ideas or points of view
- diplomatic
tactful in dealing with people
- observant
actively observing physical surroundings and activities
- perceptive
aware of and able to understand situations
- versatile
able to readily adapt to different situations
- tenacious
persistent and focused on achieving objectives
- decisive
able to reach timely conclusions based on logical reasoning and analysis
- self-reliant
able to act and function independently while interacting effectively with others
- acting with fortitude
able to act responsibly and ethically, even though these actions may not always be popular and may sometimes result in disagreement or confrontation
- open to improvement
willing to learn from situations, and striving for better audit results
- culturally sensitive
observant and respectful to the culture of the auditee
- collaborative
effectively interact with others, including team members and auditee personnel
Some of these may be learned but many cannot.