Connect to Xero by clicking the button "Authenticate". A new window will open where you will be asked to log in to Xero and approve that the application is granted access.
The user account used to authenticate the connection can have access to multiple organizations. Select the organization which should be used in this integration.
Use the Reload button to fetch updated sub register data from Xero. This can be necessary if newly updated data isn't visible in the Sharespine configuration such as new ledger accounts for example..