1. Login to your app
2. Click 'Close' on the default Check-In page
3. On the home page, click on 'Traveller' icon
4. Click on 'Overseas Vaccination Details'
5. Click 'Update for <user's name>'
6. Choose 'Yes' for the overseas vaccination doses that need to be updated and fill in the details accordingly
7. Make sure the details are correct, then click 'Submit'