You will need to link each Client (where you are posting invoices to Sage) and Supplier (where you are posting Supplier Invoices or Bank Account Transactions to Sage) in Fresh Projects to the appropriate Xero contact.

1. Go to the Settings Cog > Expense Types

2. Open the expense type you are looking to link to Sage and select Accounting. 

3. Select the Sage account to post the expense to, as well as the VAT rate applicable to the expense type. 

4. Remember to Save your changes before exiting.