Create New Order # for Each Quantity and Display on Confirmation Page

Showing the breakdown on the checkout page will work with the option “https:// Split Overview on Checkout Page Off/On” https://www.youtube.com/embed/ol_U6ghhJSk

Quantity split is not available in the basic version, if you really meant to separate items quantity wise. https://ps.w.org/woo-order-splitter/assets/screenshot-7.png

There is nor formal documentation as this plugin works in the same way for each split method, its basic function is to separate the order items into multiple child orders. Further there are a few split methods which you can use as per your requirements.