The first requirement referred to in section 359(2) is that the person on whom the notice is served must refrain from knowingly—
permitting a room to be occupied as sleeping accommodation otherwise than in accordance with the notice, or
permitting persons to occupy the premises as sleeping accommodation in such numbers that it is not possible to avoid persons of opposite sexes who are not living together as husband and wife sleeping in the same room.
For the purposes of subsection (1)(b)—
children under the age of 12 shall be left out of account, and
it shall be assumed that the persons occupying the premises as sleeping accommodation sleep only in rooms for which a maximum is set by the notice and that the maximum set for each room is not exceeded.