When using the New Formula Column option at the top of the data table to group by a categorical column, it would be helpful to use an icon to label a column that "grouping by" has been activated, similar to how columns are labeled as value colors/markers, formula, hidden, excluded, etc.
![image.png image.png](https://community.jmp.com/t5/image/serverpage/image-id/25800i901F274008F516E6/image-dimensions/196x178?v=v2)