There are a few operations that you can apply on Directories to offer some flexibility in the file management.

Move a Directory

In order to change the location of a given directory, right-click on its name or icon and select the Cut directory (move from...) command...

... select the new destination directory and apply now the Paste directory (move to...) command from the contextual menu...

... and check that your directory has in effect changed place - the MyNewFolder directory has moved from the MyImages folder to the NAT folder:

Delete a Directory

Deleting a Directory is even simpler - locate the folder to suppress in the File resources tree, right-click on its name or icon and select the Delete Folder command from the contextual menu: