How can I configure the PDF file of a Sales Invoice that will be sent to the client?

How can I configure the PDF file of a Sales Invoice that will be sent to the client?

During Sales Invoice creation, the Requester selects a Theme for the Sales Invoice. After its approval, a PDF file will be generated based on this particular Theme.

Themes are configured in Xero and picked up by ApprovalMax.

In order to change a Theme in Xero, please go to Organisation settings > Invoice settings.
You can also upload your own .docx template.