change directory names automatically

i have a buch of directories of the following structure:

artist/artist - album/*.mp3

how can i change the album directory name from "artist - album" to only "album" automatically of all directories.

thx alot.

Convert "Tag - Tag"

... or ...
Action "Format value"
Field: _DIRECTORY
Formatstring: %ALBUM%

DD.20160131.1159.CET

gr8 thx.
works perfect.