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Invoice Templates could be configured from the Invoices settings. Therefore, Click on Billing→ Advaned→ Advanced→ Settings from the main menu.
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You can also select the invoice information, append matter and invoice custom fields, and manage the line items order for expenses, time logs, bill items, and services.
Additionally, you can manage here the appearance of time logs settings, Invoice summary, and upload signatures as well.
Finally, from the Footer tab, you can show the page number and add a footer to your template.
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