How can I copy files/folders?
Select the file/folder you want to copy and click the Copy button in the Editing menu that appears. A new window will pop-up, where you can choose the location to which you want to copy your file/folder. Click Copy to confirm it.
OR right-click on the chosen file/folder, click Copy and do the previously described process. To select multiple files/folders check the checkboxes on the left side of files/folders.
You can also quickly select multiple files/folders by holding down the Shift key and clicking on the first and the last file/folder of the files/folders you want to copy.