In Center settings › Billing:

Company details

Company or self-employed name, tax ID, address, province, postcode and email. They appear on every invoice.

Invoice details

  • Series and Starting number.
  • Automatic invoice: invoices each sale when it's made.
  • Invoice footer note.
  • Days before automatic purchase: how far ahead recurring purchases are generated.
  • Email invoices automatically.

Important: set the series and starting number before issuing your first invoice.