diff --git a/admin/templates/lot_tag_panel.html b/admin/templates/lot_tag_panel.html
index 44be7ff..0578aea 100644
--- a/admin/templates/lot_tag_panel.html
+++ b/admin/templates/lot_tag_panel.html
@@ -14,7 +14,7 @@
 </div>
 <div class="row mt-4">
   <div class="col">
-    {% if lot_tags %}
+    {% if lot_tags_edit %}
   <table class="table table-hover table-bordered align-middle">
   <thead class="table-light">
     <tr>
@@ -25,7 +25,7 @@
     </tr>
   </thead>
   <tbody id="sortable_list">
-    {% for tag in lot_tags %}
+    {% for tag in lot_tags_edit %}
       <tr>
         <td class="font-monospace">
           {{ tag.name }}
@@ -93,7 +93,7 @@
 </div>
 
 <!-- Edit Lot Tag Modals -->
-{% for tag in lot_tags %}
+{% for tag in lot_tags_edit %}
 <div class="modal fade" id="editLotTagModal{{ tag.id }}" tabindex="-1" aria-labelledby="editLotTagModalLabel{{ tag.id }}" aria-hidden="true">
   <div class="modal-dialog">
     <div class="modal-content">
@@ -125,7 +125,7 @@
 
 
 <!-- delete lot tag definition Modal -->
-{% for tag in lot_tags %}
+{% for tag in lot_tags_edit %}
 <div class="modal fade" id="deleteLotTagModal{{ tag.id }}" tabindex="-1" aria-labelledby="deleteLotTagModalLabel{{ tag.id }}" aria-hidden="true">
   <div class="modal-dialog">
     <div class="modal-content">
diff --git a/admin/views.py b/admin/views.py
index 01b9f0e..345227d 100644
--- a/admin/views.py
+++ b/admin/views.py
@@ -118,6 +118,14 @@ class LotTagPanelView(AdminView, TemplateView):
     title = _("Lot Tag Panel")
     breadcrumb = _("admin / Lot Tag Panel")
 
+    def get_context_data(self, **kwargs):
+        context = super().get_context_data(**kwargs)
+        lot_tags = LotTag.objects.filter(
+            owner=self.request.user.institution
+        )
+        context.update({"lot_tags_edit": lot_tags})
+        return context
+
 
 class AddLotTagView(AdminView, CreateView):
     template_name = "lot_tag_panel.html"
@@ -130,6 +138,11 @@ class AddLotTagView(AdminView, CreateView):
     def form_valid(self, form):
         form.instance.owner = self.request.user.institution
         form.instance.user = self.request.user
+        name = form.instance.name
+        if LotTag.objects.filter(name=name).first():
+            msg = _(f"The name '{name}' exist.")
+            messages.error(self.request, msg)
+            return redirect(self.success_url)
 
         response = super().form_valid(form)
         messages.success(self.request, _("Lot Tag successfully added."))
@@ -153,6 +166,12 @@ class DeleteLotTagView(AdminView, DeleteView):
             messages.warning(self.request, msg)
             return redirect(reverse_lazy('admin:tag_panel'))
 
+        if self.object.inbox:
+            msg = f"The tag '{self.object.name}'"
+            msg += " is a inbox, you can redefine but not delete."
+            messages.error(self.request, msg)
+            return redirect(self.success_url)
+
         response = super().delete(request, *args, **kwargs)
         msg = _('Lot Tag has been deleted.')
         messages.success(self.request, msg)
@@ -175,6 +194,12 @@ class UpdateLotTagView(AdminView, UpdateView):
         return super().get_form_kwargs()
 
     def form_valid(self, form):
+        name = form.instance.name
+        if LotTag.objects.filter(name=name).first():
+            msg = _(f"The name '{name}' exist.")
+            messages.error(self.request, msg)
+            return redirect(self.success_url)
+
         response = super().form_valid(form)
         msg = _("Lot Tag updated successfully.")
         messages.success(self.request, msg)
@@ -249,14 +274,11 @@ class DeleteStateDefinitionView(AdminView, StateDefinitionContextMixin, SuccessM
     def get_success_message(self, cleaned_data):
         return f'State definition: {self.object.state}, has been deleted'
 
-    def delete(self, request, *args, **kwargs):
-        self.object = self.get_object()
-
-        #only an admin of current institution can delete
-        if not object.institution == self.request.user.institution:
+    def form_valid(self, form):
+        if not self.object.institution == self.request.user.institution:
             raise Http404
 
-        return super().delete(request, *args, **kwargs)
+        return super().form_valid(form)
 
 
 class UpdateStateOrderView(AdminView, TemplateView):
diff --git a/dashboard/mixins.py b/dashboard/mixins.py
index b245c96..ecfe417 100644
--- a/dashboard/mixins.py
+++ b/dashboard/mixins.py
@@ -8,6 +8,7 @@ from django.views.generic.base import TemplateView
 from device.models import Device
 from evidence.models import SystemProperty
 from lot.models import LotTag
+from action.models import StateDefinition
 
 
 class Http403(PermissionDenied):
@@ -32,7 +33,12 @@ class DashboardView(LoginRequiredMixin):
 
     def get_context_data(self, **kwargs):
         context = super().get_context_data(**kwargs)
+        lot_tags = LotTag.objects.filter(
+            owner=self.request.user.institution,
+            inbox=False
+        )
         context.update({
+            "inbox": LotTag.objects.get(inbox=True).name,
             "commit_id": settings.COMMIT,
             'title': self.title,
             'subtitle': self.subtitle,
@@ -41,7 +47,7 @@ class DashboardView(LoginRequiredMixin):
             'section': self.section,
             'path': resolve(self.request.path).url_name,
             'user': self.request.user,
-            'lot_tags': LotTag.objects.filter(owner=self.request.user.institution)
+            'lot_tags': lot_tags
         })
         return context
 
diff --git a/dashboard/templates/base.html b/dashboard/templates/base.html
index 83bfb54..83d4a3e 100644
--- a/dashboard/templates/base.html
+++ b/dashboard/templates/base.html
@@ -131,7 +131,7 @@
                 <ul class="flex-column mb-2 ul_sidebar accordion-collapse {% if path == 'tags' or path == 'lot' or path in 'unassigned dashboard' %}expanded{% else %}collapse{% endif %}" id="ul_lots" data-bs-parent="#sidebarMenu">
 		  <li class="nav-item">
                     <a class="nav-link{% if path == 'unassigned' %} active2{% endif %}" href="{% url 'dashboard:unassigned' %}">
-                      {% trans 'Unassigned' %}
+		      {{ inbox }}
                     </a>
                   </li>
 
diff --git a/lot/migrations/0007_lottag_inbox.py b/lot/migrations/0007_lottag_inbox.py
new file mode 100644
index 0000000..78c08b1
--- /dev/null
+++ b/lot/migrations/0007_lottag_inbox.py
@@ -0,0 +1,18 @@
+# Generated by Django 5.0.6 on 2025-02-17 10:47
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('lot', '0006_lotproperty_property_unique_type_key_lot'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='lottag',
+            name='inbox',
+            field=models.BooleanField(default=False),
+        ),
+    ]
diff --git a/lot/models.py b/lot/models.py
index e468932..7ab5ae5 100644
--- a/lot/models.py
+++ b/lot/models.py
@@ -15,6 +15,7 @@ class LotTag(models.Model):
     name = models.CharField(max_length=STR_SIZE, blank=False, null=False)
     owner = models.ForeignKey(Institution, on_delete=models.CASCADE)
     user = models.ForeignKey(User, on_delete=models.SET_NULL, null=True, blank=True)
+    inbox = models.BooleanField(default=False)
 
     def __str__(self):
         return self.name
@@ -45,7 +46,7 @@ class Lot(models.Model):
         for d in DeviceLot.objects.filter(lot=self, device_id=v):
             d.delete()
 
-class LotProperty (Property):
+class LotProperty(Property):
     lot  = models.ForeignKey(Lot, on_delete=models.CASCADE)
 
     class Type(models.IntegerChoices):
diff --git a/lot/views.py b/lot/views.py
index 2093668..a64405f 100644
--- a/lot/views.py
+++ b/lot/views.py
@@ -28,6 +28,14 @@ class NewLotView(DashboardView, CreateView):
         "closed",
     )
 
+    def get_form(self):
+        form = super().get_form()
+        form.fields["type"].queryset = LotTag.objects.filter(
+            owner=self.request.user.institution,
+            inbox=False
+        )
+        return form
+
     def form_valid(self, form):
         form.instance.owner = self.request.user.institution
         form.instance.user = self.request.user
diff --git a/user/management/commands/add_institution.py b/user/management/commands/add_institution.py
index b7a4a26..346d2fc 100644
--- a/user/management/commands/add_institution.py
+++ b/user/management/commands/add_institution.py
@@ -2,6 +2,7 @@ from django.core.management.base import BaseCommand
 from user.models import Institution
 from lot.models import LotTag
 
+
 class Command(BaseCommand):
     help = "Create a new Institution"
 
@@ -13,6 +14,11 @@ class Command(BaseCommand):
         self.create_lot_tags()
 
     def create_lot_tags(self):
+        LotTag.objects.create(
+            inbox=True,
+            name="Inbox",
+            owner=self.institution
+        )
         tags = [
             "Entrada",
             "Salida",