Steps

1. Select multiple files from the document list.
2. Click 'Actions' in the toolbar, choose 'Add to Workspace' option from the drop-down menu.
   (OR) Select multiple files, right click and select 'Add to Workspace' from the drop down menu.
3. A dialog will appear with the Workspace's folder. Choose the appropriate folder and click 'Submit' button.
4. The selected files will get moved to the Workspace's folder.