Click on the Forecast tab within Settings to customize account-wide settings affecting the sales forecast and related analytics.
Adjust forecast using out-of-stock information
By default, Demand Planner takes out-of-stock information into consideration. This means that the forecast will exclude the time a product is out-of-stock so that the sales velocity is not understated. If your store allows overselling (continued selling even when an item is out-of-stock), then you should uncheck the box for "Adjust forecast using out-of-stock information".
Products are seasonal by default
If you sell seasonal products, you can set a seasonal forecast as the default. Seasonal products may be sold only at certain times of the year, or may sell all year but perform differently at particular times of the year (i.e. winter sales spikes). If most or all of your products are seasonal, select this box. You can also adjust seasonality on a variant level.
The default forecast in Demand Planner uses sales velocity and considers recent trends. You can adjust the number of months that have an effect on the forecast.
Default replenishment can be set for products that don't have a sales history. For example, if an item is recommended to replenish zero units because it doesn't yet have any sales, a default replenishment of 5 will create a replenishment recommendation of 5 units.
ABC Class or “A” Class, “B” Class, “C” Class
Classes are categories of your inventory. By default, “A” Class includes SKUs comprising the top 80% of revenue, “B” Class is the next 15%, and “C” Class is the final 5%.