Healthier SG Appointment & Health Plan

How do I use the HealthHub app to make a Healthier SG appointment?
How do I view my Health Plan in the HealthHub app?
How do I change my enrolled Healthier SG clinic on HealthHub?
How do I access community programmes related to Healthier SG?
Can I view all my health records and screenings/tests results in the HealthHub app?
Am I able to decide who has access to my records and results?
Where can I get technical assistance on the HealthHub app?
How can I find out when I should return for my next annual Health Plan check-in?
Can I still qualify for the one-off Healthpoints benefit if I am unable to access HealthHub to view my updated Health Plan (e.g. I do not have a smartphone)?