On Windows, your notification area is located in the lower-right corner of your taskbar at the bottom of your screen. On a Mac, you can find it on your gray menu bar in the upper-right corner of your screen. Selective Sync is available for every Dropbox account, including free ones, as long as you have the Dropbox app.
All unchecked folders will be deleted from your computer and kept only online. On some versions of the Dropbox app, this button may be named Choose folders to sync or Change Settings under the Selective Sync heading.
To view these folders, you have to visit Dropbox online since they will not appear on your computer. Alternatively, you can download these files to your local storage and make them offline as well as online.
Smart Sync is only available for DropBox Plus, Family, Professional, and Business accounts using the Dropbox app.
