Output Folder
The Output Folder page of the project properties (Project > Properties > Project > Output Folder) sets the Output folder for localized files. Output file name patterns refer to it as $(OutputDir).
By default the output folder is the folder of the original file, $(SourceDir), so localized files are created next to the originals in a folder for each language. To keep localized files apart from the build, set a folder such as $(ProjectDir)\Localized.
The field accepts macros; Localizer shows the resulting path under it.
See also Output Path and Create Localized Files.