Use Scheduler in a week view without Dates

    public partial class Shifts
    {
        public int empId { get; set; }
        public int Id { get; set; }
        public int day { get; set; }
        public System.DateTime start { get; set; }
        public System.DateTime end { get; set; }
        public int location { get; set; }
    
        public virtual employee employee { get; set; }
    }

    public partial class location
    {
        public location()
        {
            this.Shifts = new HashSet<Shifts>();
        }
    
        public int Id { get; set; }
        public string name { get; set; }
   
        public virtual ICollection<Shifts> Shifts { get; set; }

    }

public partial class employee
    {
        public employee()
        {
            this.aktiveSchichten = new HashSet<Shifts>();
        }
    
        public int Id { get; set; }
        public string firstName { get; set; }
        public string lastName { get; set; }

        public virtual ICollection<aktiveSchichten> aktiveSchichten { get; set; }
    }

 var mitarbeiter = db.employee;
            var schichten = db.Shifts.Where(a => a.location == (int)radMultiColumnComboBox2.SelectedValue);
            foreach (var schicht in schichten)
            {
                radScheduler1.Appointments.BeginUpdate();
                int count = 1;
                foreach (var ma in mitarbeiter)
                {
                    this.radScheduler1.Resources.Add(new Resource(count++, ma.firstName + ma.lastName));
                }
                DateTime start = ?;
                DateTime end = ?;
                Appointment appointment1 = new Appointment(start, end, schicht.employee.firstName + schicht.employee.firstName, "test");
                appointment1.BackgroundId = (int)AppointmentBackground.Anniversary;
                appointment1.StatusId = (int)AppointmentStatus.Unavailable;
                radScheduler1.Appointments.Add(appointment1);
                radScheduler1.Appointments.EndUpdate();
           }