Suppose both companies you worked for were part of the Auto-inclusion Scheme for Employment Income. In that case, you will not need to report the details since your information is already submitted by your employers and included as part of your tax assessment.
2. If not all companies you worked for are part of the Auto-Inclusion for Employment Incomes, you will need to fill your total employment income from the companies not participating in the scheme.
3. If all the companies are not part of the Auto-inclusion scheme, you will have to report the total amount of your income in the Main Tax Form from all your employers.