I have tried to double click on the cell that I want to override and it is not working.Is there another method?Example:CCA col.7 .I want o Value

In the Forms view of the TurboTax CD/Download version, you can perform an override on an actual form by:

put your cursor in the field you wish to override > press the F2 button of your keyboard > click Yes on the box that appears asking "Do you want to override this field"?