Voicemeeter output audio. Mixer audio problem with applications

Hello! Hoping this is the right channel.

I have already contacted the microsoft technicla support but without any positive results.

I'm just using voicemeeter potato for audio managment but i have a problem.

That program creates 3 virtual audio devices (like speakers), but virtual, and they appears in the right corner on the audio mixer, but when i set all application, for example discord (that i set in the second virtual channel), it appears in ALL of these channels.

I've already contacted the voicemeeter and they told me that the presence of an application in a device is all part from windows mixer.

So how can i do to "put" discord only on a device, in the mixer?

Thank you