Install problem - WDK6000, KMDF, Toaster Filter

Hello guys,
This time I am trying to install one of the example from MS in WDK6000. It is a KMDF Toaster Filter driver. I changed a little bit here and there to see if I can get the right IRPs from one of my USB devices as a upper filter.

Where do I need to modify the INF to make it sit on top of other device? This example makes its own “class” and install it on top of this class as a upperfilter.

Also SHOULD I always need to use the INF to install it? For WDM, I used to test it manually by making “UpperFilters” item on a proper registry key and then en/diable devices it works fine. Can I do this way with KMDF device drivers?

Best regards,