Search \ Case \ Items Tab \ Menu Customization Box
Click the Menu Customization box to display the drop-down Options menu. From here, you can turn on/off which Column Headers you wish to see displayed on your screen (or not displayed if there is an “X” beside them). If you don’t want a column displayed, click on its name and it will be removed (not permanently) from the list.
You may also click the blue "x" on any column header such as Category or Status to remove it from your grid view.