Inventory Alerts will display an SKU when the current inventory quantity is less than the total unit sales for the prior 7 days.
From the left navigation menu click Point of Sale > Home.
From the upper right-hand corner, choose the Store Location.
The bottom right card contains the top inventory alerts, including:
The item name.
The number of items left in stock.
To add inventory or mark items as "Sold Out", to the right of the item you'd like to manage click +/-.
Select "Sold Out" ---OR--- enter a quantity, and select or add a new reason for the change from the dropdown.
Click Save to update.