In Settings > Print settings > General you are able to modify the print layout, such as the placement of the company logo, information to print on the header or the footer texts, and other basic features. This allows you to customise the look to be more personal to your clinic.
Settings > General > Print settings > Invoice will enable you to manage the fields on the invoice print
It is also possible to define and add two additional fields to be visible in the Header field. Click the Edit icon to make the desired changes.