An Owners Corporation may, pursuant to a special resolution, change the bylaws pursuant to the following provisions: s47 Strata Schemes Management Act 1996: must not create rights of exclusive use and enjoyment of, or special privileges in respect of, common property. The initial period need not have expired.
The average number of years an autistic person is expected to live is about 78 years old. Autism is not a life threatening disease and it is not a disease to start with on its own.
In the case of a sudden death, you may need to reassure the autistic person that this will not happen to them, and how you know this. You could say that usually only people over seventy years of age die, and it is rare for children or people younger than that to die.