https://support.apple.com/en-mk/guide/itunes/itns3165/windows
Pre-order items from the iTunes Store on PC - Apple Support (MK)
In iTunes on your PC, reserve items from the iTunes Store before they become available for purchase.
pre order itemsfrom theitunes store
https://changelog.shopify.com/posts/edit-subscription-and-pre-order-items-prior-to-fulfilling-an-order
Edit subscription and pre-order items prior to fulfilling an order - Shopify Changelog
You can now edit subscription and pre-order items before fulfilling an order without having to cancel and recreate it. For pay-per-delivery subscr...
pre order itemsedit subscription