You can set up Minimum Stock Level (Minimum Quantity, Low Quantity) value for each item and control the items you need to reorder with the report "Reorder Report"
In the additional menu of the "Goods" screen you can quickly show/hide Minimum Quantity values for easy editing.
Extended settings for Minimum Quantity are available in Settings - Minimum Quantity.
You can choose to show Low Stock Alerts there, for example, as well as other settings.