The in-charge auditor most likely would have a supervisory responsibility to explain to the staff assistants

a. That immaterial fraud is not to be reported to the client's audit committee.

b. How the results of various auditing procedures performed by the assistants should be evaluated.

c. What benefits may be attained by the assistants' adherence to established time budgets.

d. Why certain documents are being transferred from the current file to the permanent file.