Motu M4 Audio 4 channel setup

Hello:

I have a Motu M4 connected to a Win11 machine.

I would like to have independent control of 4 oscillators/sound sources.

There seems to be a limitation that windows will only allow 2 channels of audio I/O.

Is there a simple way to configure and use 4 independent audio I/O channels?

Thank you,

TomC