Topic: How to isolate audio output to just headphones?

Hello

I have my FireFace UFX with total mix which i am relatively new to.

I am trying to understand how to have the audio only  come out of the headphones or only come out of the speakers depending on which one I want in windows 10.

Currently if I select from windows the headphones as the main output, I get both sound from the headphones and the main speakers. But if i select the speakers in windows 10 then that seems to work correctly.

Here is a some pictures to explain better.

This is my setup for the speakers channel:

https://i.imgur.com/X8cv3oy.png

https://i.imgur.com/ZJKLJRa.png

Now if i select the headphones:

https://i.imgur.com/4bqiLlu.png

https://i.imgur.com/hCIppEH.png

You can see here i still have audio coming out of the main speakers, how do I set it up so it will only come out of the headphones when i change the default audio output in windows 10 ?

Hope you can help.
Thanks