How to use the RTC in the HTCC-AB01?

I have an HTCC-AB01 and I need to use the RTC.
I can’t find any useful documentation about how to use it.
Can anyone please help me?

Thanks in advance.

P.S. The time.ino example seems tu use millis() and not the RTC, so it is useless.

Ok, I will use some other module with better documentation and better support for my project.

Farewell Heltec!