I am having a hard time, getting Boms to work correctly in Odoo 10 CE on bitnami local OSX install. I played around selling several Bom-Products in Pos and watching how Stock of used raw materials is affected. I miss some critical functions i see quite basic for any mrp. 

1. Howto avoid, that odoo just counts into negative stock value. Any MRP or sourcing is pretty much useless, if you cannot route dependent on having or not having a product. 

2. How to trigger actually stock moves or automate procurement processes, I have several constellations, where raw material just appears as ready to move in stock moves, meaning, I can sell products that I will never be able to produce because all raw materials do not exist. 

3 How "Process when all components available" is defined? I have a Product with 2 boms, in order to run into second, when running out of raw-material used in first. Unfortunately having a negative stock of all needed Bom-Components does not count as unavailable here, neither. I have not found a single bom constellation that would take my alternative product defined in lower priority bom 2. 

Thanks for giving any redoable example, that computes correct.