(1) On application under section 219, an external reviewer may—
(a) review the segregation direction; or
(b) refuse to review the direction.
(2) Chapter 9 (Criminal matters—conduct of disciplinary reviews) applies, with any necessary changes, in relation to the review as if it were a review under that chapter.
(3) After completing a review, the external reviewer may—
(a) confirm the direction under review; or
(b) give any direction the director-general may give under the section authorising the direction under review, either by—
(i) amending the direction under review; or
(ii) setting aside the direction under review and making a direction in substitution for the direction set aside.