diff --git a/calendar_usability/resource.py b/calendar_usability/resource.py
index ac567ed..77d1299 100644
--- a/calendar_usability/resource.py
+++ b/calendar_usability/resource.py
@@ -11,29 +11,64 @@ class ResourceCalendar(models.Model):
 
     name = fields.Char(compute='_compute_name', store=True)
 
+    @api.model
+    def default_get(self, fields_list):
+        "'attendance_ids' field default value"
+        values = super(ResourceCalendar, self).default_get(fields_list)
+        vals = []
+        params = self.get_my_calendar_data()
+        for hours in range(0, params.endday):
+            mapping = self._populate_attendance(
+                hours, params.hour_from, params.hour_to)
+            vals.append((0, 0, mapping))
+            if params.hour_from2 and params.hour_to2:
+                mapping = self._populate_attendance(
+                    hours, params.hour_from2, params.hour_to2)
+                vals.append((0, 0, mapping))
+        values['attendance_ids'] = vals
+        return values
+
     @api.multi
     @api.depends('attendance_ids')
     def _compute_name(self):
         for rec in self:
             if rec.attendance_ids:
                 info = []
-                for day in rec.attendance_ids:
-                    selection = day._fields['dayofweek'].selection
-                    string_day = self.map_day()[
-                        selection[int(day.dayofweek)][1]]
-                    info.append(
-                        '%s %s/%s'
-                        % (string_day, int(day.hour_from), int(day.hour_to)))
-                rec.name = ', '.join(info) or '_'
-            else:
-                rec.name = '_'
+                dayofweek = ''
+                for hours in rec.attendance_ids:
+                    if hours.dayofweek != dayofweek:
+                        selection = hours._fields['dayofweek'].selection
+                        str_day = self.map_day()[
+                            selection[int(hours.dayofweek)][1]]
+                        info.append(
+                            self.string_format(main_string=True) % (
+                                str_day, int(hours.hour_from),
+                                int(hours.hour_to)))
+                    else:
+                        # We are on the same day but with another hour range
+                        # we concatenate on the first string of the day
+                        position = info.index(info[-1:][0])
+                        info[position] = self.string_format() % (
+                            info[-1:][0], int(hours.hour_from),
+                            int(hours.hour_to))
+                    dayofweek = hours.dayofweek
+                rec.name = ', '.join(info)
+
+    @api.model
+    def string_format(self, main_string=None):
+        'Override me to customize calendar name'
+        if main_string:
+            # ie: 'Lu 8-12'
+            return '%s %s-%s'
+        # ie: 'Lu 8-12 and 13-17'
+        return '%s / %s-%s'
 
     @api.model
     def map_day(self):
         'Override me to customize calendar name'
-        return {'Monday': 'L', 'Tuesday': 'Ma', 'Wednesday': 'Me',
-                'Thursday': 'J', 'Friday': 'V', 'Saturday': 'S',
-                'Sunday': 'D'}
+        return {'Monday': 'Lu', 'Tuesday': 'Ma', 'Wednesday': 'Me',
+                'Thursday': 'Je', 'Friday': 'Ve', 'Saturday': 'Sa',
+                'Sunday': 'Di'}
 
     @api.model
     def get_my_calendar_data(self):
@@ -50,26 +85,10 @@ class ResourceCalendar(models.Model):
         )
 
     @api.model
-    def _populate_attendance(self, day, hour_from, hour_to):
+    def _populate_attendance(self, hours, hour_from, hour_to):
         return {
             'hour_from': hour_from,
             'hour_to': hour_to,
             'name': '.',
-            'dayofweek': str(day),
+            'dayofweek': str(hours),
         }
-
-    @api.model
-    def create(self, vals):
-        if not vals.get('attendance_ids'):
-            values = []
-            params = self.get_my_calendar_data()
-            for day in range(0, params.endday):
-                mapping = self._populate_attendance(
-                    day, params.hour_from, params.hour_to)
-                values.append((0, 0, mapping))
-                if params.hour_from2 and params.hour_to2:
-                    mapping = self._populate_attendance(
-                        day, params.hour_from2, params.hour_to2)
-                    values.append((0, 0, mapping))
-            vals['attendance_ids'] = values
-        return super(ResourceCalendar, self).create(vals)