Arranger
Part of speech: noun
Definition: One who arranges.
Organizer
Part of speech: noun
Definition: A device used to help one organize, by separating into subsectionsA person who arranges the details of a public eventA hand-held micro-computer that will perform specific tasks; can be used as an electronic diary, alarm clock, recorder of memos and notes, a portable database etc.A group of cells that, together with the evocator, control differentiation in the embryo; the inductor
Example sentence: A first-rate organizer is never in a hurry. He is never late. He always keeps up his sleeve a margin for the unexpected.