I see that in the sample set of data If you click Summarize by there are additional options. However, when I do it using my own data the options are not present.
Currently On Version:
I also see that this has an interesting effect that I’ll attach as a GIF. Once you summarize it manually and save, it reverts back
Expecting (sample data example)
Actual using my data
If you go a step further (gif attached) it will allow the manual aggregation but it will not save it correctly