Make sure to activate first the "Foreign" via "Manage section"
Select "Income" > "Foreign"
Scroll through item 20 "Other Foreign Source Income"
Once the "Exchange Rate" is entered, the "AUD Amount" tabs will be automatically calculated.
Foreign Income Tax Offset/Foreign Tax Paid
Foreign income tax offset is the sum of Foreign tax paid amounts from worksheets from Foreign section.
It will then show via 20O