There are two ways to create a List: from the Product Details page and from the Lists page.
Product Details Page
Find the first product you wish to add to a list and click to view the product details page.
Click the Add to List icon located to the right of the quantity field.
Once you’ve clicked on the button, select the "New List" dropdown in the upper right-hand side of the "Add to List" window.
Type the name of your list and select Add when finished.
Subsequently, you can go into your list page and see the newly created list.
Start by clicking on the Lists button in the upper right hand side of the header.
From List Options, select New List.
Select either New List or New Combined List depending on which you’d like to create
Fill out the form details and submit by selecting Create List
You’ll be directed into the new list where you will now be able to search for products to add to the list.