you want to Copy the files from 1 to 2? - hardly a function for a file (name) renamer
or you want to Copy the file names from 1 to 2? & if so, the destination files would be... what, empty, 0-bytes, with only the file name itself as a placeholder in the S2 directory?
or ?
(robocopy can duplicate a folder structure, but I don't believe it can recreate empty file names.)
I find myself wanting this functionality in situations where I pain stakingly manually rename files 1 by 1, but there are other folders containing the exact same description of files but with sligh difference.
So "Clone (#)" would be a 1:1 file name copy-to-destination function. But it would be able to copy multiple file names at once and can send them to multiple destinations at once, hence (Selection 1 & Selection 2).