Change RAM clock in BIOS of Intel NUC10

I am using Intel NUC (NUC10i7FNH) Because of some reasons I want to reduce my RAM clock speed. I did some search and find this document from intel that said you can do this by clicking Advanced Button (not advanced tap) and then go to performance tab and change settings.

But there is no "advanced button" in my BIOS! I can just see configs in read-only mode! Based on another intel document, newer devices have a different BIOS version called Aptio and I think the previous document just using older BIOS version called "Visual BIOS Core"

My question is, how can I change RAM clock on this device with Aptio bios?

UPDATE: I take photos from bios. Advanced menu tab:

Performance menu tab:

Thanks,

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