Under Settings - Invoices - Accounting groups you can define new accounting areas and edit or delete existing accounting areas.
Each accounting group has its own number cycle, its own template and its own sender e-mail address. In the accounting area overview you can view existing accounting areas, delete or edit them.
Under "New Accounting group", you can create a new accounting area.
The following window will now open:
Under the tab PDF template you can create the PDF of your invoice yourself.
Under the tab Table Settings you can edit your invoice table yourself. Here you can define exactly how your services are listed. A list of possible placeholders is also available here to help you.
Under the tab Mail Settings you can specify shipping options for the invoice.