Whenever the department seeks to establish or designate a unit or housing location for the placement of an incarcerated individual following a disciplinary hearing or an administrative segregation proceeding, such unit shall either be a special housing unit, a residential mental health treatment unit, a residential rehabilitation unit, a step-down unit, a separate keeplock unit, or an I-ASAT unit as defined in this Title. The duration of the placement of the incarcerated individual into one of these units, and the conditions within each unit and the requirements for out-of-cell programming, treatment, services and exercise, shall be governed by the applicable provisions of this Title.