In the new menu, WooCommerce Invoice Manager, we can see two new pages, settings and invoices

On the settings page, there is a tab menu, to tweak differents settings of the plugins.

These settings tabs are:

• Invoice
• Orders
• Emails
• Tools

Invoice

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

Orders

Invoice metabox: Add options to download, view, generate or email the order directly from the order viewing page in Woocommerce.

Invoice column in order list: Add an extra column displaying the designated invoice for each order.

Emails

Include invoice in: select where the invoice will be include, can be in in new order email or in customer note email

Attach invoice pdf: attach invoice PDF view

Attach invoice download link: attach download PDF link

Tools

Add specific actions for create and delete invoices in specific circumstances: