diff --git a/beesdoo_shift_attendance/models/attendance_sheet.py b/beesdoo_shift_attendance/models/attendance_sheet.py
index b668bbb..df8669e 100644
--- a/beesdoo_shift_attendance/models/attendance_sheet.py
+++ b/beesdoo_shift_attendance/models/attendance_sheet.py
@@ -527,7 +527,6 @@ class AttendanceSheet(models.Model):
     def validate_with_checks(self):
         self.ensure_one()
 
-
         if self.state == "validated":
             raise UserError(_("The sheet has already been validated."))
         if self.start_time > datetime.now():
@@ -606,7 +605,6 @@ class AttendanceSheet(models.Model):
         Generate sheets with shifts in the time interval
         defined from corresponding CRON time interval.
         """
-
         tasks = self.env["beesdoo.shift.shift"]
         sheets = self.env["beesdoo.shift.sheet"]
         current_time = datetime.now()
@@ -620,8 +618,8 @@ class AttendanceSheet(models.Model):
 
         tasks = tasks.search(
             [
-                ("start_time", ">", str(current_time),),
-                ("start_time", "<", str(current_time + allowed_time_range),),
+                ("start_time", ">", str(current_time)),
+                ("start_time", "<", str(current_time + allowed_time_range)),
             ]
         )
 
diff --git a/beesdoo_shift_attendance/security/group.xml b/beesdoo_shift_attendance/security/group.xml
index 4ad07fb..bc19ba3 100644
--- a/beesdoo_shift_attendance/security/group.xml
+++ b/beesdoo_shift_attendance/security/group.xml
@@ -7,6 +7,7 @@
         <field name="name">Attendance Sheet Validation</field>
         <field name="category_id" ref="base.module_category_cooperative_management"/>
         <field name="implied_ids" eval="[(4, ref('group_shift_attendance_sheet'))]"/>
+        <field name="users" eval="[(6, 0, [ref('base.user_root')])]" />
     </record>
     <record id="beesdoo_shift.group_shift_attendance" model="res.groups">
         <field name="implied_ids" eval="[(4, ref('group_shift_attendance_sheet'))]"/>
diff --git a/beesdoo_shift_attendance/tests/test_beesdoo_shift.py b/beesdoo_shift_attendance/tests/test_beesdoo_shift.py
index 5ccca63..0e4943a 100644
--- a/beesdoo_shift_attendance/tests/test_beesdoo_shift.py
+++ b/beesdoo_shift_attendance/tests/test_beesdoo_shift.py
@@ -57,23 +57,22 @@ class TestBeesdooShift(TransactionCase):
         )
 
         self.task_type_1 = self.env.ref(
-            "beesdoo_shift_attendance"
-            ".beesdoo_shift_attendance_task_type_1_demo"
+            "beesdoo_shift.beesdoo_shift_task_type_1_demo"
         )
         self.task_type_2 = self.env.ref(
-            "beesdoo_shift_attendance"
-            ".beesdoo_shift_attendance_task_type_2_demo"
+            "beesdoo_shift.beesdoo_shift_task_type_2_demo"
         )
         self.task_type_3 = self.env.ref(
-            "beesdoo_shift_attendance"
-            ".beesdoo_shift_attendance_task_type_3_demo"
+            "beesdoo_shift.beesdoo_shift_task_type_3_demo"
         )
 
         self.task_template_1 = self.env.ref(
-            "beesdoo_shift.beesdoo_shift_task_template_1_demo"
+            "beesdoo_shift_attendance"
+            ".beesdoo_shift_attendance_task_template_1_demo"
         )
         self.task_template_2 = self.env.ref(
-            "beesdoo_shift.beesdoo_shift_task_template_2_demo"
+            "beesdoo_shift_attendance"
+            ".beesdoo_shift_attendance_task_template_2_demo"
         )
 
         # Set time in and out of generation interval parameter
@@ -292,16 +291,16 @@ class TestBeesdooShift(TransactionCase):
                 self.assertFalse(shift.is_compensation)
 
         # Add a worker that should be replaced
-        with self.assertRaises(UserError) as e:
+        with self.assertRaises(UserError):
             sheet_1.on_barcode_scanned(421457731742)
         # Wrong barcode
-        with self.assertRaises(UserError) as e:
+        with self.assertRaises(UserError):
             sheet_1.on_barcode_scanned(101010)
 
         # Add an unsubscribed worker
         self.worker_regular_1.cooperative_status_ids.sr = -2
         self.worker_regular_1.cooperative_status_ids.sc = -2
-        with self.assertRaises(UserError) as e:
+        with self.assertRaises(UserError):
             sheet_1.on_barcode_scanned(421457731745)
 
     def test_attendance_sheet_edition(self):
@@ -351,9 +350,9 @@ class TestBeesdooShift(TransactionCase):
         # Wait necessary time for shifts to begin
         waiting_time = (self.start_in_1 - datetime.now()).total_seconds()
         if waiting_time > 0:
-            with self.assertRaises(UserError) as e:
+            with self.assertRaises(UserError) as econtext:
                 sheet_1.validate_with_checks()
-                self.assertIn("wait", str(e.exception))
+            self.assertIn("once the shifts have started", str(econtext.exception))
             time.sleep(waiting_time)
 
         sheet_1.worker_nb_feedback = "enough"
@@ -362,9 +361,9 @@ class TestBeesdooShift(TransactionCase):
 
         sheet_1.validate_with_checks()
 
-        with self.assertRaises(UserError) as e:
+        with self.assertRaises(UserError) as econtext:
             sheet_1.validate_with_checks()
-            self.assertIn("already been validated", str(e.exception))
+        self.assertIn("already been validated", str(econtext.exception))
 
         self.assertEqual(sheet_1.state, "validated")
         self.assertEqual(sheet_1.validated_by, self.user_admin.partner_id)