If you don't see this menu from TurboTax Online, open any section of your return. For example open your W-2 Section as if you were to edit it, and then look again for this menu. See Images below for reference
- Does your Screen look like the one on the bottom? (No left menu panel)

- Open any Section and click on the Pen Icon as if you were going to edit it

- The left menu panel will pop up
