Departments are the main organizational structure for your helpdesk. They can be used to divide up the helpdesk and control access to Tickets.
You can use them to represent internal divisions within your organization: e.g. Support/Sales/Marketing/Research or North America/Europe/Middle East.
Go to Admin > Tickets > Departments and create some Departments which reflect how you want to organize your helpdesk.
For a small helpdesk, you may only need a single Department.
Need more information about Departments? See the Departments chapter of this manual.