...
In this page, you can see how many qty of items in each order has been allocated, their Order Status and can allocate them into Fulfillment Process (creating Picking Request) or create Backorder for insufficient items.{How to create Picking Request for orders}
https://magestore-service.atlassian.net/wiki/spaces/PD/pages/493191181/How+to+
{How to create Backorder for orders}
...