Examples for valid paths on local and network drives:
C:\Archive
\\Computername\C\Archive
.\Archive (archive folder in profile's base folder)
..\Archive (archive folder one level higher)
Archive (archive folder is created in every subfolder where a file has to be deleted)

Examples for valid paths when using an Internet Protocol:
/Archive (archive folder in root folder)
./Archive (archive folder in profile's base folder)
../Archive (archive folder one level higher)
Archive (archive folder is created in every subfolder where a file has to be deleted)

To use the folder only on one side, leave the field for the other side empty.