diff --git a/apps/wei/templates/wei/1A_list.html b/apps/wei/templates/wei/1A_list.html
index 044db80..d9b8293 100644
--- a/apps/wei/templates/wei/1A_list.html
+++ b/apps/wei/templates/wei/1A_list.html
@@ -12,7 +12,7 @@
         <div class="card-body">
             {% render_table bus_repartition_table %}
             <hr>
-            <a href="#" class="btn btn-block btn-success">{% trans "Start attribution!" %}</a>
+            <a href="{% url 'wei:wei_bus_1A_next' pk=club.pk %}" class="btn btn-block btn-success">{% trans "Start attribution!" %}</a>
             <hr>
             {% render_table table %}
         </div>
diff --git a/apps/wei/templates/wei/attribute_bus_1A.html b/apps/wei/templates/wei/attribute_bus_1A.html
index dbfb649..32cc27d 100644
--- a/apps/wei/templates/wei/attribute_bus_1A.html
+++ b/apps/wei/templates/wei/attribute_bus_1A.html
@@ -49,7 +49,7 @@
             <hr>
 
             {% for bus, score in survey.ordered_buses %}
-                <button class="btn btn-{% if bus.pk == survey.information.selected_bus_pk %}success{% else %}light{% endif %}">
+                <button class="btn btn-{% if bus.pk == survey.information.selected_bus_pk %}success{% else %}light{% endif %}" onclick="choose_bus({{ bus.pk }})">
                     {{ bus }} ({{ score|floatformat:2 }}) : {{ bus.memberships.count }} / {{ bus.size }}
                 </button>
             {% endfor %}
@@ -58,3 +58,31 @@
         </div>
     </div>
 {% endblock %}
+
+{% block extrajavascript %}
+    <script>
+        function choose_bus(bus_id) {
+            let valid_buses = [{% for bus, score in survey.ordered_buses %}{{ bus.pk }}, {% endfor %}];
+            if (valid_buses.indexOf(bus_id) === -1) {
+                console.log("Invalid chosen bus")
+                return
+            }
+
+            $.ajax({
+                url: "/api/wei/membership/{{ object.membership.id }}/",
+                type: "PATCH",
+                dataType: "json",
+                headers: {
+                    "X-CSRFTOKEN": CSRF_TOKEN
+                },
+                data: {
+                    bus: bus_id,
+                }
+            }).done(function () {
+                window.location = "{% url 'wei:wei_bus_1A_next' pk=object.wei.pk %}"
+            }).fail(function (xhr) {
+                errMsg(xhr.responseJSON)
+            })
+        }
+    </script>
+{% endblock %}
diff --git a/apps/wei/urls.py b/apps/wei/urls.py
index ff6e88c..fb49721 100644
--- a/apps/wei/urls.py
+++ b/apps/wei/urls.py
@@ -6,7 +6,7 @@ from django.urls import path
 from .views import CurrentWEIDetailView, WEI1AListView, WEIListView, WEICreateView, WEIDetailView, WEIUpdateView, \
     WEIRegistrationsView, WEIMembershipsView, MemberListRenderView, \
     BusCreateView, BusManageView, BusUpdateView, BusTeamCreateView, BusTeamManageView, BusTeamUpdateView, \
-    WEIAttributeBus1AView, WEIRegister1AView, WEIRegister2AView, WEIUpdateRegistrationView, \
+    WEIAttributeBus1AView, WEIAttributeBus1ANextView, WEIRegister1AView, WEIRegister2AView, WEIUpdateRegistrationView, \
     WEIDeleteRegistrationView, WEIValidateRegistrationView, WEISurveyView, WEISurveyEndView, WEIClosedView
 
 app_name = 'wei'
@@ -41,4 +41,5 @@ urlpatterns = [
     path('survey/<int:pk>/end/', WEISurveyEndView.as_view(), name="wei_survey_end"),
     path('detail/<int:pk>/closed/', WEIClosedView.as_view(), name="wei_closed"),
     path('bus-1A/<int:pk>/', WEIAttributeBus1AView.as_view(), name="wei_bus_1A"),
+    path('bus-1A/next/<int:pk>/', WEIAttributeBus1ANextView.as_view(), name="wei_bus_1A_next"),
 ]
diff --git a/apps/wei/views.py b/apps/wei/views.py
index d0601c6..0f08e06 100644
--- a/apps/wei/views.py
+++ b/apps/wei/views.py
@@ -13,7 +13,7 @@ from django.core.exceptions import PermissionDenied
 from django.db import transaction
 from django.db.models import Q, Count
 from django.db.models.functions.text import Lower
-from django.http import HttpResponse
+from django.http import HttpResponse, Http404
 from django.shortcuts import redirect
 from django.template.loader import render_to_string
 from django.urls import reverse_lazy
@@ -1175,7 +1175,7 @@ class WEI1AListView(LoginRequiredMixin, ProtectQuerysetMixin, SingleTableView):
     def get_queryset(self, filter_permissions=True, **kwargs):
         qs = super().get_queryset(filter_permissions, **kwargs)
         qs = qs.filter(first_year=True, membership__isnull=False)
-        qs = qs.order_by('membership__bus')
+        qs = qs.order_by('-membership__bus')
         return qs
 
     def get_context_data(self, **kwargs):
@@ -1200,3 +1200,15 @@ class WEIAttributeBus1AView(ProtectQuerysetMixin, DetailView):
         context['club'] = self.object.wei
         context['survey'] = CurrentSurvey(self.object)
         return context
+
+
+class WEIAttributeBus1ANextView(LoginRequiredMixin, RedirectView):
+    def get_redirect_url(self, *args, **kwargs):
+        wei = WEIClub.objects.filter(pk=self.kwargs['pk'])
+        if not wei.exists():
+            raise Http404
+        wei = wei.get()
+        qs = WEIRegistration.objects.filter(wei=wei, membership__isnull=False, membership__bus__isnull=True)
+        if qs.exists():
+            return reverse_lazy('wei:wei_bus_1A', args=(qs.first().pk, ))
+        return reverse_lazy('wei_1A_list', args=(wei.pk, ))