When you place a schedule on a sheet, you can specify that one or more column headings display vertically instead of horizontally, as shown here.
The following procedure assumes that you have added a sheet to a project, created a schedule, and placed it on the sheet.
To display vertical column headings for a schedule on a sheet
This setting affects the column heading on a sheet only. It does not affect its display in the schedule view.
In the schedule, the column headings for the selected fields display vertically instead of horizontally. See Adjusting Schedule Columns on a Sheet.