Given their high volumes, the polyclinics generally operate on an appointment basis to optimise capacity, patient waiting times and manpower allocation. For walk-in patients who are unable to get a same day appointment, the polyclinics will triage based on medical needs. Patients requiring urgent medical attention will be seen by the doctor, whilst non-urgent cases may be advised to seek treatment at a nearby General Practitioner (GP) clinic. Community Health Assist Scheme (CHAS) cardholders can receive subsidies for medical care at CHAS GP clinics. Such triaging is generally independent of age.