1. select abc
2. go to color and change opacity from 100% to 0%. this would hide text ‘abc’
3. now right click on column next to abc, go to format-> Column Divider-> pane-> none
4. now reduce the size of abc column as minimal as possible. so user wont be able to see it.
Create a new blank column with text ‘ ‘. Drag this column and repeat above steps – 3,4.
Detailed video is also available at youtube.