How to configure arduiono i2s driver to read audio data from four Mic?

[embeddedport]

Hi There,

I want to read audio input from the four Mics attached with ESP32-S3-Wroom-1 through EVAL-ADAU7118Z PDM to the I2S converter kit. I can successfully read two channels (2 mics) in stereo mode. But I don't know how to configure the i2s driver to read four channels. Below is the snapshot of my hardware setup.

I am eagerly waiting for any help.

Thanks,
Bhavya