Using Data Entry Grids and Forms : Data Entry Grid Overview : Replacing All Values
   
Replacing All Values
When you want to replace a value in all fields of a selected grid column with the same value, right-click the grid column and select Replace All Values in the shortcut menu. When the Replace All Values dialog box opens, enter the information that will be used to replace values in all fields of the selected grid column and then click OK.
The Replace All Values command is not available for read-only grid columns, fields in a mini-grid, or picklist fields.