You can completely close the Dropbox desktop app and stop your files from syncing to your Dropbox account. You can choose to automatically open folders in either the Dropbox desktop app or the Dropbox folder in File Explorer (Windows) or Finder (Mac).
Once you’ve installed the Dropbox desktop app, you can open it just like any other app on your computer-through the Windows Start menu or the macOS Launchpad. The Dropbox icon in your taskbar (Windows) or menu bar (Mac).The Dropbox folder in File Explorer (Windows) or Finder (Mac).
When you download and install the Dropbox desktop app, three things are added to your computer: With the Dropbox desktop app, you can access the files and folders stored in your Dropbox account from your computer.