To change the formatting of all values of a column, do the following:
1.Double-click on any value in the column with the format that you would like to change.
1.Under Style click on the button in the Format field to adjust the formatter.
2.Select the desired formatting.
Using the Properties window, you can set formatting for several columns at once:
1.If you do not already see the Properties window, select View[Task Windows] > Show > Properties.
2.Select the columns that have formatting that you would like to change by clicking on these while holding down the CTRL key. You can select all columns by pressing the ALT key.
3.Now click in the Format input field of the Properties window and then click on the button that appears to the right of the field.
4.Select the desired format.
Note: The format applies to all values in the column(s) selected.