This is a Commonwealth legislative instrument made under section 33 of the Industry Research and Development Act 1986. Its main function is to prescribe the National Communications Campaign to Support Small Business Program.
The instrument says the program provides funding for a communications campaign to support small businesses affected by the economic impacts of COVID-19. It also states the program's purpose, which is to mitigate those negative economic impacts by encouraging consumers to patronise small businesses.
That is an important practical distinction. The instrument is primarily about legal authority for a government program and related funding. It is not a detailed operating manual for businesses, and it does not create a licensing scheme, registration process, reporting duty or mandatory code of conduct for small business owners.
If you are a business owner reading this page, the safest starting point is that the instrument explains the legal framework for a government campaign. It does not, by itself, tell you how to join the campaign, how businesses are chosen, or whether your business will receive any direct benefit.