Mini Cart allow to add your item in store so that customers can check their cart items, quantities and their total price.
Select Widgets: You can add widget to your Store.
Navigate to Manage > Active Widget > Mini Cart
Navigate to Setting > Enable Show Label / Show Mini-Shopping Cart
If you will enable Show Label then cart label will be visible on your store
Show Mini-Shopping Cart
If you will enable Show Mini-Shoping Cart then your item added will be show in shopping cart.
Note: It also allows you to delete, sorting, setting, vertical and horizontal your widgets.