A family group conference must be convened for the purpose of reviewing the arrangements for the care and protection of a child implemented following the approval of those arrangements by the Secretary under section 37 in any of the following circumstances:

(a) if the Secretary is required to convene such a conference under those arrangements;

(b) if the Secretary –

(i) has been requested by the child or any 2 or more members of the child's family to convene such a conference; or

(ii) considers it necessary or desirable to convene such a conference.