How to: Edit a function using the Function Wizard.
Solution:
Select the cell containing the function and use the 'Function...' command in the 'Insert' menu to edit the function.
1) Select the cell containing the function.
2) Select the 'Insert' menu and select 'Function...'. (The Editing Function 1 of 1 dialog box appears.)
3) Make the necessary changes to the arguments in the corresponding boxes.
Editing a function
4) Click 'Finish' to update the changes and close the 'Editing Function 1 of 1' dialog box.
