I want to learn and create a custom view similar to "BoM Structure & Cost" in MRP Module. Currently, I'm working in Odoo 15, is there any keyword or specific documentation or instruction or even tutorial on how to achieve it? I tried to search on the forum with keywords such as QWEB report render, and Custom report Odoo, but the result is not what I expected. I know basic Odoo developer guide such as, creating module, inheriting, and customing a form view, but never build a view like "BoM Structure & Cost" at MRP Module.