514.Subsection (1) confers a discretion on courts to provide that a suspended sentence order passed under section 189(1) be subject to periodic review at a review hearing. Subsection (2) excludes cases where the offender is subject to an order that imposes a drug rehabilitation requirement that is subject to court review, as those orders will already be subject to review. A review hearing is conducted by the court responsible for the order. Subsections (3) to (5) specify which court is responsible for the order in particular situations.