I apologize, this is not our intention.
Please, could you tell us which questions do you have? Checking the messages your last question was if the principal product can be a variation, and the answer is yes as I told you.
You can create the BOMS, and then create a variable final product. With ATUM Product Levels installed each variation can be linked to BOMS.
Rereading again this post, I saw that in the first one you said that when you use ATUM Product Levels and Variation Shared Inventory for WC plugin, it causes a wrong performance. If the issues you are experimenting are related to this, note that we have just tested the ATUM compatibility with the plugins you will see on this documentation: https://forum.stockmanagementlabs.com/d/2383-atum-compatibility
With the rest, we can`t assure that ATUM works properly. So I'm afraid there is an incompatibility between both plugins, and at this point you have two options:
- Looking for a compatible alternative.
- Using custom development to add the compatibility, but as we don't offer this service you will need to hire a developer.
Please, if you have any other questions about how Product Levels works, do not hesitate to ask.