Synonyms:
organizer, organiser, arranger
Meaning: a person who brings order and organization to an enterprise; "she was the organizer of the meeting"
Usage examples
She did not die, however, but recovered to take up again her duties as chief nurse and organizer.
You don't oppose this organizer because you think he's seditious but because you're afraid that the farmers he is organizing will deprive you townsmen of the money you make out of mortgages and wheat and shops. Of course, since we're at war with Germany, anything that any one of us doesn't like is 'pro-German,' whether it's business competition or bad music.