I don't like the way that LW uses the title 'Shared' as the default name of the downld folder. I think it's confusing. By default this folder is shared so it means you're sharing everything you're downlding. (I changed the name of my downld folder to LW downld folder lol.)

'Shared' folder = Downld folder = 'Saved Files' folder (it's the one folder with 2 different names.)

Incomplete folder = all files not 100% downlded

Any other folders you decide to share are whatever you decide to name them. So yes you can move your completed files out of the Saved/Shared folder & move to drive D