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Activate Xero Add-on
Login to your ServiceM8 account using your PC or Mac, and click Settings.
Click ServiceM8 Add-ons
Click the Connect button for Xero Integration
Complete the Xero Setup Wizard
Click the Next button to proceed
Authorise ServiceM8 to connect to Xero
Select the Organisation you wish to connect with ServiceM8, and then click the Authorise button.