If any uploads or downloads are in progress, an overall status will be shown in the Transfers section of the source list:
The pause button can be used to quickly pause (and resume) all transfers in progress.
Click on Transfers in the source list to reveal the transfer queue.
If a transfer consists of group of files, click the disclosure triangle to expand it.
To cancel a transfer (or group of transfers) in progress, click the X button:
To reveal an item in the Finder once it has been completely downloaded, click the magnifying glass:
To pause or resume the entire queue at once, click Pause All or Resume All.
Click Clear List to remove all completed (canceled or otherwise) transfers from the queue.
Click Uploads or Downloads to view only those types of transfers. Click All to view all types of transfers.