The file "museexmatch.conf.template" needs to be placed in the MusicBee/Appdata folder for the Portable version.
Then delete the ".template" extension and open museexmatch.conf in a text editor to adjust the settings. Use just the *.conf extension.
I set "allowedDistance" to 7, "verifyAlbum" to false (makes an album name not required), "addLyricsSource" to true (show source on the MB panel), "trimTitle" to True (removes brackets from search), and both of the SyncedLyrics options to false.
After using it a TokenID will be automatically added to the file.