Thank you for your question.
For example, Evaluators and Verifiers may be selected among the workers with a high level of trust in their local communities.

You can find more details in the LaborX whitepaper - https://github.com/ChronoBank/Documentation/blob/master/laborx_whitepaper.pdf
This may be not the final Whitepaper version but you will get a general idea.

If you have questions or suggestions after reading you are welcome to join our #whitepaper slack channel. You can read its archive, many topics are covered in details there.