(1) For the purposes of this Part—
"isolation" means the placement of a child or young person in a locked room or other contained area—
(a) separated from other children and young persons held in custody in the youth justice custodial centre; and
(b) separated from the normal routine of the youth justice custodial centre.
(2) Without limiting subsection (1), a child or young person is not in isolation if the child or young person is participating in, or has the opportunity to participate in, the normal routine of the youth justice custodial centre but separate from other children and young persons held in custody in the youth justice custodial centre.