Navigate to 'Production' > 'Maintenance' > 'Departments'.
Click the 'New Departments' button at the top-left of the screen to create a new Department. 
Type in the desired 'Code'.
Type in the 'Name' of the department in the 2nd text field.
Fill in the value of the Departments 'Capacity'.
This 'Capacity' represents the maximum number of employees within a department.
Once complete, Click the 'Save' button to add the new Department to the system. 