CM4 + Timecard Mini Essentials without PCIe card

Hi,
I have CM4 with my own installed OS on the eMMc on Waveshare CM4 to 4b adapter baseboard and ordered Timecard Mini Essentials for it. I am not using the PCIe card.

I cant find any guides on how to set it up so I can see the timecard from the CM4 and set up NTP server on it.

Any help appreciated : )

Thanks!

Baseboard:
https://www.waveshare.com/cm4-to-pi4-adapter.htm

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