Final answer:
When a consultant is hired to do "staff development" in an agency, it is known as the insider-outsider model.
Step-by-step explanation:
When a consultant is hired to come into an agency to do "staff development," this is known as the insider-outsider model. In this model, those who already work for the firm are considered "insiders," as they are familiar with the procedures, while the consultant is an "outsider" who brings in new perspectives and knowledge to enhance the staff's skills and development.