Editing ID3v2.3

Hello mp3tag users. I need help! I'm kinda a new user of mp3tag and I would like to know, how can I edit ACTIONS function so extended tags of id3v2.3 were formatted that way:

  1. I need ARTIST to be copied to BAND, COMPOSER & ORIGARTIST fields.
  2. I need cover to be automatically imported from image file in the same directory as mp3 files.
  3. Automatically modify WWW field in extended tags as i need.
  4. COPYRIGHT & ENCODED BY were formatted too as I need.
  5. Then I need that only few fields were included in mp3 tag and all the others were deleted. I need only TRACK NUMBER, TITLE, ARTIST, ALBUM, YEAR, GENRE, COMMENTS, BAND, COMPOSER, ORIGARTIST, WWW, COPYRIGHT & ENCODED BY fileds. All the others should be deleted.

This is what I want to do with that wonderful tool. Is there any possibility to make it work that way?

Please read http://help.mp3tag.de/en/options_format.html
Especially the following actions:

Format value
Import cover from file
Remove fields except