Hi,
1. Create template BOM with above items as non-inventory items. It should be purchase and sales item
2. While create PO and GRPO, the inventory will not increased.
3. There is no option, if you enter 100 EA, then the components will not updated automatically. You have enter manually in sales or purchase order.
4. Automatic update components will be updated automatically in Production BOM which should be inventory item.
Thanks & Regards,
Nagarajan