1. Click here.
2. Click "Automations"
3. Click "Invoice"
4. Click "New Automation"
5. Enter a name for the automation
6. Set the "Trigger Type" to "Status Changed"
7. Click the "Is Active:" field.
8. Click "Save"
9. Edit the default condition
10. Set it to the status you want the invoice to be export to Xero in, for example "Sent"
11. Click to save
12. Click "Select New Action..."
13. Click "Export To Xero"
14. Click "Save & Close"