Disable diagram layout on specific nodes

How I can position some of my nodes that will not depended on diagram layout? Currently i have diagram with TreeLayout and when nodes are loaded, they location are updated according to TreeLayout - How specific nodes can ignore diagram layout?
I believe that this is possible if I create my own class that will inherit from TreeLayout and will make some customization, but I hope there is another way.

Yes, you could customize your TreeLayout, but it’s easier to set or bind go:Part.LayoutId to “None”.