The Chart of Accounts plays a vital role when exporting reconciled invoices to your accounting software (click here if you want to learn how to export your reconciled data).
To set up your Chart of Accounts, go to Your Business > Manage My Chart of Accounts. Now, on the Nominal Accounts simply fill in the information regarding Account Code, Account Name and the Department. Then, click on "Add Nominal Account".
In this tab you can check, edit and disable all your existing codes.
On the tab departments, you can create the departments you have in your company using the same logic used adding Nominal Account.
If you want to work with Supplier codes and nominals, please click here to learn how to do it.