Paragraph 5
Where the child in respect of whom the leave is to be taken is to be placed with the employee for adoption by him and the leave is to begin on the date of the placement, the notice required for the purpose of paragraph 1(b) is notice which—
(a)
specifies the week in which the placement is expected to occur and the duration of the period of leave, and
(b)
is given to the employer at least 21 days before the beginning of that week, or, if that is not reasonably practicable, as soon as is reasonably practicable.