Create kits

Good afternoon. Can you please tell me where can I find instructions for creating product kits? For example: - there is a "product number 1" and "product number 2", the availability and price of which are updated from the price lists of suppliers. - there is a virtual "product number 3" which is assembled from "product number 1" and "product number 2" Question: the task is such that the system updates the availability and price of the combined "product #3" based on the data on the price and availability of "product #1" and "product #2". That is, in fact, Boxing itself must assemble sets of goods based on the data on the availability of components. How to do it? what tools to implement? Are there any instructions on this matter? I searched and didn't find it.