Mr Frank views himself as the leader of those in hiding, responsible for their safety.
Explanation:
Ever since the Nazi regime started and the Hitler order of capturing Jews started, many Jews were already captured and sent to concentration camps. For the Frank family and some other friends, they were in hiding in one secret room above the building where they have to be extra careful with the way they live their lives if they want to be safe. And for that to be successful, since they are hiding above an office, Mr. Frank tells the other fugitives about the dos and don'ts of the daytime so as to ensure their safety and survival.
