for which nights are to count for the purposes of shared care under paragraphs 7 and 8, or for how it is to be determined whether a night counts;

for what counts, or does not count, as “care” for those purposes; and

for paragraph 7(3) or 8(2) to have effect, in prescribed circumstances, as if the period mentioned there were other than 12 months, and in such circumstances for the Table in paragraph 7(4) (or that Table as modified pursuant to regulations made under paragraph 10A(2)(a)), or the period mentioned in paragraph 8(2), to have effect with prescribed adjustments.