Animal communicators' are here to help. 請問該句to help是否為副詞修飾全句?

Animal communicators are here to help. Does the "to help" sentence modify the whole sentence as an adverb phrase of reason/cause, purpose, condition, concession.? No.
In this pattern the verb is followed by a direct object, the preposition to, and the prepositional object=to help (animal).
eg:-Animal communicators are here to help animal.

再問Animal communicators' are here to help. 因to help中help是動詞,所以它為不定詞片語當形容詞用並作為主詞補語之用[SC], to help animal說明Animal communicators之目的.對嗎?