After creating a Manufacture Order, toggle over to "Work Order" tab to proceed with assembling the order by updating Start and complete dates, also updating the picking quantity and location/lot for each item.
The "Tracking" feature allows you to set an expiry date for the final product and allocate it to a specific "lot" for better tracking.
The "Tracking" feature for Components items allows you to draw the product from different lots, if there are multiple lots of storage for any given product. Below screenshot is for Peanut Butter.
Once the information is updated in Work Order, click Start and then Pick when picking inventory to assemble into the final product, once that is done complete the order.