AIM helps you plan inventory in several ways. Firstly, it will calculate your stock limits through modelling your rate of demand with your strategy of how many days of stock you want. This will set stock limits that will trigger alerts in the Reorder Report. 

Secondly, you can forecast future demand with AIM. Using the Supply chart found in AIM forecast you can see what future replenishments are required. These replenishments are calculated in a more precise way than what Modelling will achieve. Export your supply chart to create a detailed replenishment plan.  Use forecasting for your most important products, or if you have seasonal products, or perhaps you need careful management of long lead times for imported products. 

Finally, AIM will assist you in planning production. In Forecast, you can enable component demand calculation if the product is an assembled product. This will link the required replenishments of the assembled product to the components based on the production duration that is calculated from the Bill of Materials details.