You want answers to the following. Non-profit organisations are variously described as associations, societies, clubs and institutions. What they all have in common is that their main object is not profit. They usually have a fluctuating membership. Throughout Australia, an existing association may be incorporated or unincorporated.
Unincorporated associations are common in all States.
But they suffer from a number of disadvantages. The most serious disadvantage is that the Committee of Management is responsible for the debts of the association. Each member of the Committee is personally liable for all the debts of the association to the extent that the association's assets are insufficient to cover the debts. Debts, of course, include compensation claims arising from personal injuries etc. It is usually difficult for an unincorporated association to obtain insurance cover for these risks.