During an assurance engagement an internal auditor discovered that risk limits risk limit were set...

In this situation, the appropriate action for the internal auditor is to remain independent and avoid roles that could impair this independence, such as making managerial decisions. By advising and then directing the management to submit the proposal to senior management and the board, the auditor maintains an advisory role without crossing into decision-making territory, thus preserving the independence necessary for an assurance role.

Institute of Internal Auditors (IIA) - International Standards for the Professional Practice of Internal Auditing