A simple solution is to offer scheduled delivery for your store's products and streamline your delivery method. It's providing customers the most pleasant delivery experience. Do you want to place an order on a customer request? If yes, you can do this using the Shopify shipping estimate app. With this app, you can let your customers decide their favored date and time, whenever they want to receive the order. You as a merchant can add delivery systems, such as home delivery, on-time delivery, pick-up on request, etc. Additionally, you will have two delivery options i.e. on-time delivery and fixed-day delivery to build slots for the products registered in your store.