Navigate to the option within the menu.
Create a Department

Ensure that no department in the display has already been selected. Click on the button. A new line will appear in the display. Double click where the department name is displayed and edit this as you wish.
From the dropdown menus you can select a department leader and assistant leader.
Department Leader

Once you have assigned the department leader and assistant leader, the former will automatically become responsible for any requests from employees within that department.
Assign Employees to a Department

To assign an employee to a department, navigate to within the menu. Select the employee from the list in the centre of the screen, then open the User Data option from the right hand side menu. Here you will find a dropdown entitled Department.
Sub-Departments

Create a sub-department by first selecting the parent department in the list. When clicking on the button, the new department will appear indented from the parent department.
Sub-departments allow employees within the parent department to see those within the sub-department, but do not allow those within the sub-department to see those in the parent department. This is ideal for creating management structures that can see the departments beneath them.