It is easy to connect your Boma account with 3rd party integrations, including Xero HQ.
Start on your Dashboard page and click on the Settings link in your menu.
Click on the Linked Accounts menu item and you'll see the 3rd party options that you can connect to.
Select the integration you wish to action by clicking on the relevant Connect button and follow the instructions.
Please ensure that you have your login details to hand in case you need to enter them, mostly it will be automatic if you've logged into the site before on the same web browser.
You will need to be an administrator of your Xero account in order to link up the first time to import your contacts.