Hi @JZ,
Welcome in the Community !
In order to solve this problem, you can try to add in your "Group" column a "Value Order" property.
To do this, right-click in your "Group" column name, click on "Column Properties" and then "Value Order" :
![Victor_G_0-1706039727106.png Victor_G_0-1706039727106.png](https://community.jmp.com/t5/image/serverpage/image-id/60510iAD84058BC6D331FC/image-size/medium?v=v2&px=400)
You can then in the new window indicate the order of the categories :
![Victor_G_2-1706039807668.png Victor_G_2-1706039807668.png](https://community.jmp.com/t5/image/serverpage/image-id/60512i59DCD77F3507ED21/image-size/medium?v=v2&px=400)
And this ordering will be kept in the graph builder :
![Victor_G_3-1706039861196.png Victor_G_3-1706039861196.png](https://community.jmp.com/t5/image/serverpage/image-id/60513i96D320A189FB5673/image-size/medium?v=v2&px=400)
Hope this answer will help you,
Victor GUILLER
"It is not unusual for a well-designed experiment to analyze itself" (Box, Hunter and Hunter)