Thank you @jaumeortola for replying. Here is an example:
In Serbian language word „црвена“ is adjective and means “red”. Word „звезда“ is common noun and means “star”. However, together they form personal noun „Црвена Звезда“ (“Red Star”), a football club in Belgrade.
I want that „Црвена Звезда“ is properly tagged as personal noun in all seven cases of Serbian language. Hence my question: must I write in multiword.txt something like:
Црвена Звезда personal_noun_nominative_tag
Црвене Звезде personal_noun_genitive_tag
Црвеној Звезди personal_noun_locative_tag
Thanks again for help.