If you are using TurboTax Online, the QuickZoom function is not available to use. If you wanted to review other forms/schedules/worksheets, you would have to pay to print (not necessarily e-file yet): How do I print a copy of my TurboTax Online return before filing?
If you are using TurboTax Online and don't want to pay to print, you will only be able to preview Form 1040: How do I preview my TurboTax Online return before filing?
If you are using TurboTax CD/Download, you could switch to Forms Mode Windows (Forms Mode Mac) to review all forms/schedules/worksheets since you would have already paid for the software.