Express your wishes for the future through your will, enduring power of attorney, enduring guardianship
A will is a legal document stating what you want to happen to your assets when you die.
You can have your will written by your solicitor, or the public trustee in your state or territory.
You can also write your will using a will kit that you can purchase, but you need to complete this correctly for it to be valid.
It is important to think about this as soon as you can. If your dementia is too advanced then you may lack testamentary capacity, i.e. not be legally capable of giving instructions about making a will.