Step 1: Invoice settings (participant)

In the participant module settings -> invoices tab you can set your invoice settings.

Automated invoicing:
Automatically let the application generate and send out invoices for your participants when they register. The invoice is always an attachment to the submission email and is only sent to the participant.

Zero charge invoices:
If this setting is enabled, invoices will be generated even if the total amount of the invoice is zero.

Primary invoice data:
Determine whether the address included in the invoice should be taken from the billing address (if there is one) or from the personal data. If the billing address is the primary address, the invoice will be sent to this email address. The regular email address of the participant will then be used as a CC email address instead.
If no email address is entered at the billing address, the invoice will be sent to the participant's email address. 

New invoice for same total amount:
Generate new credit notes and invoices for participants who changed their selected items, even when the total amount due is the same as their previous invoice.

Invoice number prefix:
The invoice numbers will be displayed as the entered text, followed by the generated invoice number.

Invoice number length:
The lenght of the invoice number, without the invoice prefix.

Invoice number preview:
An example of how the invoice number will look like.

Payment reminders:
You can set the number of days after the last invoice/reminder for each new reminder. You can send max 3 reminders.