Your example only makes sence if there's one composer.

I have entered all my composers by using the credits tab. There I can assign a separate line for all the individuals, wich is the way I favor btw.

If I would like to be picky and consistent, wich I am :-) I can't use the example that you have described. Why? Because that would mess up the look of it in two ways:

1st: A line/row with up to 6-7 names instead of having each and every individual on a separate line.
2nd: They would end up under every track, instead of under credits.