To copy or move a single file click on the action menu (the three dots at the right edge of a file entry) and select either "Copy file" or "Move file". To copy or move multiple files set the checkbox on those files which is placed left of the file name and click on the "Copy" or "Move" button below the file area's file and folder list.

After selecting one or more files for copying or moving a dialog will open which asks you for the target directory in which the file(s) shall be placed. In that dialog you may select the current folder, a folder from your personal file area, a folder from a course's file area or a folder from an institute's file area. After you have selected a folder the file(s) will be copied or moved by clicking the button "Copy here" or "Move here" at the bottom of the dialog.