The phases of the Mandatory Aftercare Scheme (MAS) include:

Phase 1 - Halfway House
Phase 2 - Home Supervision
Phase 3 - Community Reintegration

Assessment will be carried out for each individual before progressing to the next phase and supervisees assessed of lower risk may be placed on the Home Supervision directly.

Visit  https://www.sps.gov.sg/learn-about-corrections/community-transition/crs-mas/ for more information on MAS.