To modify an existing column in a list portlet:
Select the column to be modified and click Edit (or double-click the column).
The Edit Display Column: <Column Title> dialog box opens.
Make the desired changes using the information from the table in Provide the column details using the information from the following table. as a guideline.
Note: Many fields are dependent on the value for Column Type and the applicable fields may be described in multiple sections of that table.
The Edit Display Column: <Column Title> dialog box closes and any applicable changes are noted on the Create Portlet Definition (List) page.