Первая каритинка - все для студентов. Т. е. The regulations are for students.
Вторая картинка -
YOU MAY - нет примера
YOU CAN, YOU ARE(NOT) ALLOWED, YOU ARE (NOT) PERMITTED - Нет примера
YOU MAY NOT smoke sigarettes
YOU WILL NOT marry during the term of your contract.
YOU MUST NOT - нет примера
YOU MAY UNDER NO CIRCUMSTANCES dye your hair