There are two different ways to set the ship window in the working order. From the drop down for preset deliveries or to select your own date range.
1. Preset delivery dates: Select the drop down to select delivery - for example select Dec 2017.
Change the Delivery Window will pop up: you then can select for this product only, all products in the order or all products within a set date range (previously done through the data).
2. "Choose Date Range" - you then can select the ship start and ship end dates. You can set this for only one product or multiple products.