To account for any delays or disruptions, you can set safety stock. This is how much of excess stock we will keep at all times to cover demand for this period. Once you start using up safety stock, you'll see a warning on the Products page.
Set the safety stock to an average delay you tend to experience with your suppliers.
For example, if safety stock is set to 15 days and lead time for the product is 45 days, the product status will change to Order now when there is stock left to cover 60 days of demand.