If you select a cell in the pivot table, the pivot toolbar should
appear. If it doesn't, choose View>Toolbars>PivotTable
On the pivot toolbar, there's a button to display or hide the field list.
To modify the pivot table you can drag a field button to a different
area of the pivot table, or drag a field button off the pivot table
You can drag field from the field list onto the pivot table.
To go back into the Pivot Wizard, on the Pivot toolbar choose
PivotTable>Wizard.
Click the Layout button to modify the layout.