FILESET_AREA_LOCATION refers to a local or remote directory where FileSet instances are stored. If a remote directory is referred, it must be in the form of username@hostname:/PATH, otherwise just the PATH can be specified as value. PATH must be always an absolute path.
If the PATH directory does not exist, it is created the first time a plugins command tries to access it. Once populated, the directory has a structure similar to the following:
Under the PATH, there exists a sub-directory for each owner that ever registered at least one FileSet instance. And, for each owner, there is a sub-directory named with the tag assigned to the instance. Each tagged folder contains the files belonging to the instance.