The rotational model refers to a staffing arrangement where employees, such as internal auditors, are rotated into different roles within the organization, often for a fixed period. In this scenario, a senior internal auditor is hired within the internal audit activity for two years before transitioning to an operations manager role. This model helps in developing a deeper understanding of the organization, broadening skill sets, and fostering cross-functional expertise. It benefits both the internal audit activity and the broader organization by facilitating knowledge transfer and career development.