diff --git a/counter/migrations/0038_countersellers.py b/counter/migrations/0038_countersellers.py
index bdf50f51..48151573 100644
--- a/counter/migrations/0038_countersellers.py
+++ b/counter/migrations/0038_countersellers.py
@@ -69,5 +69,20 @@ class Migration(migrations.Migration):
                     ),
                 ),
             ],
-        )
+        ),
+        migrations.AddField(
+            model_name="countersellers",
+            name="created_at",
+            field=models.DateTimeField(
+                auto_now_add=True,
+                default=django.utils.timezone.now,
+                verbose_name="created at",
+            ),
+            preserve_default=False,
+        ),
+        migrations.AddField(
+            model_name="countersellers",
+            name="is_regular",
+            field=models.BooleanField(default=False, verbose_name="regular barman"),
+        ),
     ]
diff --git a/counter/models.py b/counter/models.py
index 7b336957..a7e5cd56 100644
--- a/counter/models.py
+++ b/counter/models.py
@@ -748,11 +748,14 @@ class Counter(models.Model):
 
 
 class CounterSellers(models.Model):
+    """Custom through model for the counter-sellers M2M relationship."""
+
     counter = models.ForeignKey(Counter, on_delete=models.CASCADE)
     user = models.ForeignKey(User, on_delete=models.CASCADE)
+    is_regular = models.BooleanField("regular barman", default=False)
+    created_at = models.DateTimeField(_("created at"), auto_now_add=True)
 
     class Meta:
-        verbose_name = _("counter seller")
         constraints = [
             models.UniqueConstraint(
                 fields=["counter", "user"],