Double-click the source, target, or transformation.

In the Edit Tables dialog box, choose the Ports or Columns tab.

Select the first port or column using the row header number in the transformation.

To select a range to move or delete, hold down the Shift key as you click the last port or column in the range. To select individual ports or columns, hold down the Ctrl key and click each port or column using the row header number you want to move or delete.

Click Delete.