How can I delete my file/folder?
Select the file/folder you want to delete and click the Delete button in the Editing menu that appears. A new window will pop-up, where you need to confirm that you really want to delete the file/folder, by pressing Delete OR right-click on the chosen file/folder and click Delete. A new window will pop-up, where you need to confirm that you really want to delete the file/folder, by pressing Delete.
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 delete.