Leaning forward again and looking at Macmillan down the slope of his nose, Severus continued. "Nevertheless, do not take this as license to enlarge your responsibilities beyond their bounds. You will find in those parchments," he pointed at the stack in the boy's hands, "that several school rules have been changed significantly, and certain privileges have been curtailed. Instruct your prefects that in regards to these changes, deviations in enforcement will have consequences."
After he finished speaking he stood, offering the boy his hand. "Congratulations on your appointment, Mr. Macmillan. May your tenure be filled with smooth sailing, as it were." Severus knew he couldn't hope for the same for his own.