columnPinning combining with grouping

[LarryEkohe]

How is it possible when you try to group by (in my case people_name) a column, to also pin the grouping buttons to the left? Please refer to the screenshot way below

I tried various things, but none worked so far. Like using "group" or "grouping" or the index. Documentations I was also not able to find this case.

columnPinning: {
    left: ["mrt-row-pin", "mrt-row-actions"],
},

[LarryEkohe]

all good found the answer to it 👍 . it's "mrt-row-expand"