dispatcher

Short definition from Wiktionary

Noun

1. 1
   Agent noun of dispatch; one who dispatches.
2. 2
   In a transportation organization, a person who controls the movements of vehicles.
3. 3
   A piece of software responsible for assigning priorities and resources to tasks waiting to be scheduled.
4. 4
   Any die used for cheating, whether fraudulently weighted or bearing duplicate numbers.