After having connected Kosmo to your Shopify store (see here how to link Kosmo to Shopify) you'll be able to instantly import all your unfulfilled Shopify orders into Kosmo with just one click:
Go to Plan orders, click on "Sync Shopify" and select the store from which you want to import the orders
Once imported, all the unfulfilled orders will be visible in the Dashboard where you will be able to edit the information, create routes and assign them with just one click.