How to fine-tune the products and classes of child WSUS servers?

Question

System administration

The network has a main WSUS server that receives updates from Microsoft servers, and there are two child WSUS servers that receive updates from the main one. Can they be divided by product? For example, to download only updates for Windows 7 OS to one child WSUS, and Windows server OS to another child WSUS. The servers are not a replica, this option is disabled.
When you try to change the types of products or classes, it gives out this:

Maybe there is an option to change the list of products through the registry? If left as it is, the network will once again overload twice due to update synchronization.