public static void Main()
        {
            var sales = new Sales
            {
                Name           = "Sales",
                Supervisor     = "Mark",
                Employee_Count = 24,
                SalesCompleted = 0,
                MeetingPlace   = "Starbucks"
            };

            var marketing = new Marketing
            {
                Name                    = "Marketing",
                Supervisor              = "Jennifer",
                Employee_Count          = 10,
                FacebookAdCampaignsSold = 12,
                MeetingPlace            = "Panera Bread"
            };

            var it = new IT
            {
                Name           = "IT/Development",
                Supervisor     = "Ringo",
                Employee_Count = 16,
                Skillz         = "C#",
                MeetingPlace   = "Think Tank #1"
            };

            var Departments = new List <Department>
            {
                sales,
                marketing,
                it
            };

            sales.AddEmployee(new Employee {
                FirstName = "John", LastName = "Bonham"
            });
            sales.AddEmployee(new Employee {
                FirstName = "Robert", LastName = "Plant"
            });
            sales.AddEmployee(new Employee {
                FirstName = "Jimmy", LastName = "Page"
            });
            marketing.AddEmployee(new Employee {
                FirstName = "Jordan", LastName = "Pudnick"
            });
            marketing.AddEmployee(new Employee {
                FirstName = "Chad", LastName = "Gilbert"
            });
            marketing.AddEmployee(new Employee {
                FirstName = "Ian", LastName = "Grushka"
            });
            it.AddEmployee(new Employee {
                FirstName = "Paul", LastName = "McCartney"
            });
            it.AddEmployee(new Employee {
                FirstName = "John", LastName = "Lenon"
            });
            it.AddEmployee(new Employee {
                FirstName = "George", LastName = "Harrison"
            });



            foreach (var department in Departments)
            {
                switch (department)
                {
                case Sales s:
                    s.Department_Description();
                    s.SalesGoals();
                    s.SetMeetingPlace();
                    s.SetBudget(55000);
                    s.Commission("commission");
                    break;

                case Marketing m:
                    m.Department_Description();
                    m.FacebookAdCampaigns();
                    m.SetMeetingPlace();
                    m.SetBudget(55000);
                    m.Hourly("hourly");
                    break;

                case IT i:
                    i.Department_Description();
                    i.Developers();
                    i.SetMeetingPlace();
                    i.SetBudget(55000);
                    i.Salary("salary");
                    break;

                default:
                    break;
                }
            }


            foreach (var department in Departments)
            {
                Console.WriteLine($"Department: {department.Name}");
                foreach (var employee in department.Employees)
                {
                    Console.WriteLine($"{employee.FirstName} {employee.LastName}");
                }
            }



            Console.ReadLine();
        }