public Staff GetSupportStaff() => StaffDAL.GetStaffByCourseIdAndType(Id, "support");
public Staff GetLeadStaff() => StaffDAL.GetStaffByCourseIdAndType(Id, "lead");
public Staff GetSupportStaff() => StaffDAL.GetStaffByCourseIdAndType(Id, "support");
public Staff GetLeadStaff() => StaffDAL.GetStaffByCourseIdAndType(Id, "lead");