The trimming function allows you to shorten labels in a crosstab in bulk rather than edit each one manually.
To make trimming
right-click on the labels and select the option 'Trim all labels'. If you want to trim only a few labels, pick them and select 'Trim labels of selected' from the menu
choose what part will be trimmed - prefix or suffix. It depends on what part is common for all selected labels. DataTile highlights this part by default.
OR you can choose what part to trim manually