Think of that entire Estimate as the Worksheet. Things as Rows won't have individual Delivery dates.
This is the workflow concept:
The Estimate is the Scope of Work for Price. It isn't Fulfillment. If you need fulfillment, then instead of Pro, you get Premier. You need to do this, anyway, since QB 2016 reaches end of life in May 2019. So, move this file to Premier, and install it as Retail, or Wholesale/Manufacturing.
Now you have the missing tool you do not have in Pro = Sales Orders.
You make the Estimate, we agree to the scope and price. You "make an SO" for each Fulfillment and date, "from" the Estimate. That also provides for Backorder tracking, and if you manage much inventory items, this is also part of the Inventory reporting for demands on goods and services.