public static async Task WaitingList(StackLayout Stack)
        {
            Device.BeginInvokeOnMainThread(delegate { Stack.Children.Clear(); });
            try
            {
                String ResponseJson = await AppointmentModel.WaitingList("user/appointments/?id=" + Utilities.MedicID);

                var DecodedJson = JObject.Parse(ResponseJson);

                if ((int)DecodedJson["records"] > 0)
                {
                    await Utilities.RunTask(delegate
                    {
                        foreach (var appointment in DecodedJson["appointments"])
                        {
                            Status CurrentStatus = Status.Approved;
                            switch ((int)appointment["status"])
                            {
                            case -1:
                                CurrentStatus = Status.Declined;
                                break;

                            case 0:
                                CurrentStatus = Status.Waiting;
                                break;
                            }
                            ;

                            Device.BeginInvokeOnMainThread(delegate
                            {
                                Stack.Children.Add(WaitingRoomTemplate.WaitingTemplate02((int)appointment["user_id"], (int)appointment["id"], appointment["name"].ToString(), CurrentStatus, appointment["time"].ToString(), appointment["description"].ToString(), Utilities.Source("doc_anim.jpg", typeof(AppointmentController)), appointment["phone_number"].ToString()));
                            });
                        }
                    });
                }
                else
                {
                    Device.BeginInvokeOnMainThread(() =>
                    {
                        Stack.Children.Add(new Label {
                            Text = "No Patients in the waiting room.", Style = App.Current.Resources["_EmptyLabelTemplate"] as Style
                        });
                    });
                }
            }
            catch (Exception ex)
            {
                await App.Current.MainPage.DisplayAlert("Alert", ex.Message, "ok");
            }
        }