Change group column name

[#1]

JMP has the feature to group some parameters into a group. But it automatically take the 1st params into group column name. HOw do i change the group column name in JMP after grouping? 

[#2 · Accepted solution]

Oh I got it now. I need to close the break down and only then i can double click and change the column name. 

[#3]

I know this was posted almost three years ago but I appreciate you replying to yourself with the solution!