Products can be linked to Forecasts and Jobs. To add a product, navigate to the Products option in the Admin menu.
Step 1: Select the + Add button in the top right corner:

Step 2: Complete the fields on the different tabs to add a product:

The material added on the Material Bill tab will form part of the product.
Step 3: Select the Save button to Add the new product OR Select the Cancel button to close the modal, then the item will not be added.