The video explains how you can enable the Delivery Dates and Shipping Rates app on your Shopify store. Along with that, learn how to set basic configurations like pre-select delivery date, date format, enable time-slot, dynamic checkout button, and more. If you have a customized theme, you can enable that as well. Configure whether you want customers to choose the delivery date to place an order as mandatory or not. Watch the video for step by step guide.