Teamleader offers you a basic example template, which can be modified and updated under Settings > Custom layout. This way, you'll have the opportunity to use your own house style.
Note: The templates for credit notes match the ones for invoices. Click here to learn how you can create a credit note.
That's it: you're all set to create your invoices! Click here for an overview of all articles on how to get started with Teamleader.