1. Go to Business > Business Income & Expenses section to find label P2.
2. Fill-up Label P2- "Description of main business or professional activity" with only one code or one description. As per ATO portal, if you have more than one work type or business, then just declare the one with highest gross income or lowest loss.
ATO related link: https://www.ato.gov.au/calculators-and-tools/business-industry-code-tool-anzsic-coder.
