Currently when using a tree based upon a grouped column, the label of this column is displayed on top of the value of that grouped column. I would like to be able to disabled this label. Often I do not need this label and for some users this is very confusing.

In this example I would like to hide the label text Ship Manager. All I have to see is the value “Athena Marina Co. Ltd.
This will also keep the tree view much smaller, since currently this takes up two rows instead of one.