If the selected cell range contains formulae or references, Office automatically outlines the selection.
Choose Data - Group and Outline - AutoOutline.
For example, consider the following table:
January | February | March | 1st Quarter | April | May | June | 2nd Quarter |
---|---|---|---|---|---|---|---|
100 | 120 | 130 | 350 | 100 | 100 | 200 | 400 |
The cells for the 1st and 2nd quarters each contain a sum formula for the three cells to their left. If you apply the AutoOutline command, the table is grouped into two quarters.
To remove the outline, select the table, and then choose Data - Group and Outline - Remove.