Yes to all. Ticked in settings, turned on in options. I sell new machines with individual serial numbers which are neccisary for warranty registration/ tracking.

Hi this is not an answer but a comment on the delivery order lot functionality that may be relevant. I have found that the delivery order works as Eric said in that you enter the lot number when you 'transfer' the order. But there is no validation that the lot exists or there is sufficient stock on that lot to despatch. In fact you can put anything into the 'lot' column and Odoo will create the lot for you if it doesn't exist. This behaviour  makes no sense when you are doing traceability as you need to trace through your own processes and a simple keying error at despatch will destroy this. I hope this helps and if anyone knows a way to validate the lot number and the stock on the lot on a sales delivery order then please let me know. Dave