This opens the search bar, typically at the bottom-left. OneDrive can be completely uninstalled from Windows 7 and 10, but only unlinked from Windows 8 and 8.1.
This wikiHow teaches you how to remove OneDrive from your Windows PC.
Right now if I log in to OneDrive, click on shared, there is a folder entitled 'common drive. It would be easier to manipulate in finder then using web version drag and drop. I can see my own files, but not the shared folders.