Found it - completing this in March 2021, using Chrome on Macbook.
My browser Turbotax has a lefthand side navigation menu, where it lists things like: Tax Home, Documents, My Info, Federal, State, etc. Below these main menu items, as you're going through and completing your Taxes, find "Tax Tools" and open this to click on "Tools". This pops open a little Tools Center window, and a few bullet points down you will see "Delete a form." Select this link to be taken to the forms page where you can edit/delete them individually.
