It's not on a menu. Go to forms mode, then click the Open Form icon (at the top left in Windows). In the box that says "Type a form name," type the single word "what" (without the quotes). The What-If Worksheet will then appear in the list below. Double click it to open it, or select it and click Open Form. If you type What If without the hyphen it will not find it. You have to type just the single word What, or What-If with a hyphen.
If you still can't find it, make sure your software is updated. On the Online menu select Check for Updates.
Are you using Windows or a Mac?
