Hi,
These functions are currently available to Beta Channel users running:
- Windows: Version 2312 (Build 17116.10000) or later
- Mac: 16.80 (Build 23111917) or later
It seems it is only available for Insider, hope the information is helpful.
https://insider.microsoft365.com/en-us/blog/new-aggregation-functions-in-excel-groupby-and-pivotby
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