Therefore, in order to help you, I need accurate information.
1. When do you enter the expected delivery date into the ps_orders table and the DayOfDelivery column?
2. What columns can you see in the list of orders? (insert a screenshot of your table and an arrow where the columns will be)
3. Should the columns in the list of orders be filterable?
It should be noted that this is a developer forum, not a "Do the work for me for free" forum.