There’s a Jamboree Organising Committee, formed from the host State, who manage the event.
Each Branch (or State / Territory) creates a Contingent, comprising everyone who is attending from that Branch. In NSW, we have the NSW State Contingent. The State Contingent is made up of Troops and a Contingent Management Team.
The Contingent Management Team oversees the management of the State Contingent. You can find out about them here.