Template: select the invoice template to use for all orders.

Create on order status: when the invoice will be created. The invoice can be created when the order is processing or completed

Disable for free orders: disable invoice creation for free orders

Delete invoice: the invoice can be deleted either when the order is moved to the trash or when the order is permanently deleted.

Start sequence from number: When no invoices have been created, specify the starting number for the invoice numbering sequence.

Sequence Prefix: text that would be before the invoice number

Sequence Sufix: text that would be after the invoice number