All the pilgrims and the manager were then congregated on the awning-deck about the pilot-house, chattering at each other like a flock of excited magpies, and there was a scandalized murmur at my heartless promptitude.
There are no more uses of "congregate" in the book.
Show samples from other sources
People congregated outside of City Hall to protest.
It was in the quiet at the end of the day, when we began to congregate in the open space before climbing into our caves.