diff --git a/server/locale/de/LC_MESSAGES/django.po b/server/locale/de/LC_MESSAGES/django.po
index 826c9f35..d377dfff 100644
--- a/server/locale/de/LC_MESSAGES/django.po
+++ b/server/locale/de/LC_MESSAGES/django.po
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2024-06-18 15:24+0200\n"
+"POT-Creation-Date: 2024-07-27 20:59+0200\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -38,32 +38,32 @@ msgstr ""
 msgid "Nicht bestanden"
 msgstr ""
 
-#: vbv_lernwelt/assignment/export.py:203 vbv_lernwelt/assignment/export.py:206
-#: vbv_lernwelt/assignment/export.py:207
+#: vbv_lernwelt/assignment/export.py:204 vbv_lernwelt/assignment/export.py:208
+#: vbv_lernwelt/assignment/export.py:209
 msgid "Keine Daten"
 msgstr ""
 
-#: vbv_lernwelt/core/admin.py:32
+#: vbv_lernwelt/core/admin.py:38 vbv_lernwelt/sso/admin.py:83
 msgid "Personal info"
 msgstr ""
 
-#: vbv_lernwelt/core/admin.py:34
+#: vbv_lernwelt/core/admin.py:40
 msgid "Permissions"
 msgstr ""
 
-#: vbv_lernwelt/core/admin.py:45
+#: vbv_lernwelt/core/admin.py:51
 msgid "Important dates"
 msgstr ""
 
-#: vbv_lernwelt/core/admin.py:47
+#: vbv_lernwelt/core/admin.py:53
 msgid "Profile"
 msgstr ""
 
-#: vbv_lernwelt/core/admin.py:62
+#: vbv_lernwelt/core/admin.py:70
 msgid "Organisation"
 msgstr ""
 
-#: vbv_lernwelt/core/admin.py:75
+#: vbv_lernwelt/core/admin.py:83 vbv_lernwelt/sso/admin.py:86
 msgid "Additional data"
 msgstr ""
 
@@ -87,31 +87,31 @@ msgstr ""
 msgid "Lehrgang-Seite"
 msgstr ""
 
-#: vbv_lernwelt/course/models.py:272
+#: vbv_lernwelt/course/models.py:278
 msgid "Teilnehmer"
 msgstr ""
 
-#: vbv_lernwelt/course/models.py:273
+#: vbv_lernwelt/course/models.py:279
 msgid "Experte/Trainer"
 msgstr ""
 
-#: vbv_lernwelt/course/models.py:332
+#: vbv_lernwelt/course/models.py:339
 msgid "Dokumente im Circle ein/aus"
 msgstr ""
 
-#: vbv_lernwelt/course/models.py:336
+#: vbv_lernwelt/course/models.py:343
 msgid "Lernmentor-Funktion ein/aus"
 msgstr ""
 
-#: vbv_lernwelt/course/models.py:340
+#: vbv_lernwelt/course/models.py:347
 msgid "Kompetenzweise ein/aus"
 msgstr ""
 
-#: vbv_lernwelt/course/models.py:343
+#: vbv_lernwelt/course/models.py:350
 msgid "Versicherungsvermittler-Lehrgang"
 msgstr ""
 
-#: vbv_lernwelt/course/models.py:344
+#: vbv_lernwelt/course/models.py:351
 msgid "ÜK-Lehrgang"
 msgstr ""
 
@@ -119,31 +119,43 @@ msgstr ""
 msgid "export_anwesenheit"
 msgstr ""
 
-#: vbv_lernwelt/course_session/services/export_attendance.py:92
+#: vbv_lernwelt/course_session/services/export_attendance.py:86
+msgid "Optionale Anwesenheit"
+msgstr ""
+
+#: vbv_lernwelt/course_session/services/export_attendance.py:96
 msgid "Anwesenheit"
 msgstr ""
 
-#: vbv_lernwelt/course_session/services/export_attendance.py:116
+#: vbv_lernwelt/course_session/services/export_attendance.py:119
+msgid "Ja"
+msgstr ""
+
+#: vbv_lernwelt/course_session/services/export_attendance.py:119
+msgid "Nein"
+msgstr ""
+
+#: vbv_lernwelt/course_session/services/export_attendance.py:128
 msgid "Anwesend"
 msgstr ""
 
-#: vbv_lernwelt/course_session/services/export_attendance.py:116
+#: vbv_lernwelt/course_session/services/export_attendance.py:128
 msgid "Nicht anwesend"
 msgstr ""
 
-#: vbv_lernwelt/course_session/services/export_attendance.py:123
+#: vbv_lernwelt/course_session/services/export_attendance.py:135
 msgid "Vorname"
 msgstr ""
 
-#: vbv_lernwelt/course_session/services/export_attendance.py:124
+#: vbv_lernwelt/course_session/services/export_attendance.py:136
 msgid "Nachname"
 msgstr ""
 
-#: vbv_lernwelt/course_session/services/export_attendance.py:125
+#: vbv_lernwelt/course_session/services/export_attendance.py:137
 msgid "Email"
 msgstr "Email"
 
-#: vbv_lernwelt/course_session/services/export_attendance.py:126
+#: vbv_lernwelt/course_session/services/export_attendance.py:138
 msgid "Lehrvertragsnummer"
 msgstr ""
 
diff --git a/server/locale/fr/LC_MESSAGES/django.mo b/server/locale/fr/LC_MESSAGES/django.mo
index ce61e8a7..57810233 100644
Binary files a/server/locale/fr/LC_MESSAGES/django.mo and b/server/locale/fr/LC_MESSAGES/django.mo differ
diff --git a/server/locale/fr/LC_MESSAGES/django.po b/server/locale/fr/LC_MESSAGES/django.po
index 949dc188..f18ecf09 100644
--- a/server/locale/fr/LC_MESSAGES/django.po
+++ b/server/locale/fr/LC_MESSAGES/django.po
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2024-07-12 09:37+0200\n"
+"POT-Creation-Date: 2024-07-27 20:59+0200\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -95,23 +95,23 @@ msgstr ""
 msgid "Experte/Trainer"
 msgstr ""
 
-#: vbv_lernwelt/course/models.py:338
+#: vbv_lernwelt/course/models.py:339
 msgid "Dokumente im Circle ein/aus"
 msgstr ""
 
-#: vbv_lernwelt/course/models.py:342
+#: vbv_lernwelt/course/models.py:343
 msgid "Lernmentor-Funktion ein/aus"
 msgstr ""
 
-#: vbv_lernwelt/course/models.py:346
+#: vbv_lernwelt/course/models.py:347
 msgid "Kompetenzweise ein/aus"
 msgstr ""
 
-#: vbv_lernwelt/course/models.py:349
+#: vbv_lernwelt/course/models.py:350
 msgid "Versicherungsvermittler-Lehrgang"
 msgstr ""
 
-#: vbv_lernwelt/course/models.py:350
+#: vbv_lernwelt/course/models.py:351
 msgid "ÜK-Lehrgang"
 msgstr ""
 
@@ -119,31 +119,44 @@ msgstr ""
 msgid "export_anwesenheit"
 msgstr "export_presence"
 
-#: vbv_lernwelt/course_session/services/export_attendance.py:92
+#: vbv_lernwelt/course_session/services/export_attendance.py:86
+#| msgid "Anwesenheit"
+msgid "Optionale Anwesenheit"
+msgstr "Présence facultative"
+
+#: vbv_lernwelt/course_session/services/export_attendance.py:96
 msgid "Anwesenheit"
 msgstr "Présence"
 
-#: vbv_lernwelt/course_session/services/export_attendance.py:117
+#: vbv_lernwelt/course_session/services/export_attendance.py:119
+msgid "Ja"
+msgstr "Oui"
+
+#: vbv_lernwelt/course_session/services/export_attendance.py:119
+msgid "Nein"
+msgstr "Non"
+
+#: vbv_lernwelt/course_session/services/export_attendance.py:128
 msgid "Anwesend"
 msgstr "Présent"
 
-#: vbv_lernwelt/course_session/services/export_attendance.py:117
+#: vbv_lernwelt/course_session/services/export_attendance.py:128
 msgid "Nicht anwesend"
 msgstr "Pas présent"
 
-#: vbv_lernwelt/course_session/services/export_attendance.py:124
+#: vbv_lernwelt/course_session/services/export_attendance.py:135
 msgid "Vorname"
 msgstr "Prénom"
 
-#: vbv_lernwelt/course_session/services/export_attendance.py:125
+#: vbv_lernwelt/course_session/services/export_attendance.py:136
 msgid "Nachname"
 msgstr "Nom de famille"
 
-#: vbv_lernwelt/course_session/services/export_attendance.py:126
+#: vbv_lernwelt/course_session/services/export_attendance.py:137
 msgid "Email"
 msgstr "E-mail"
 
-#: vbv_lernwelt/course_session/services/export_attendance.py:127
+#: vbv_lernwelt/course_session/services/export_attendance.py:138
 msgid "Lehrvertragsnummer"
 msgstr "Numéro de contrat d'apprentissage"
 
diff --git a/server/locale/it/LC_MESSAGES/django.mo b/server/locale/it/LC_MESSAGES/django.mo
index 9cd960ba..a046bd94 100644
Binary files a/server/locale/it/LC_MESSAGES/django.mo and b/server/locale/it/LC_MESSAGES/django.mo differ
diff --git a/server/locale/it/LC_MESSAGES/django.po b/server/locale/it/LC_MESSAGES/django.po
index bd228f25..13e9a24a 100644
--- a/server/locale/it/LC_MESSAGES/django.po
+++ b/server/locale/it/LC_MESSAGES/django.po
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2024-07-12 09:36+0200\n"
+"POT-Creation-Date: 2024-07-27 20:59+0200\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -95,23 +95,23 @@ msgstr ""
 msgid "Experte/Trainer"
 msgstr ""
 
-#: vbv_lernwelt/course/models.py:338
+#: vbv_lernwelt/course/models.py:339
 msgid "Dokumente im Circle ein/aus"
 msgstr ""
 
-#: vbv_lernwelt/course/models.py:342
+#: vbv_lernwelt/course/models.py:343
 msgid "Lernmentor-Funktion ein/aus"
 msgstr ""
 
-#: vbv_lernwelt/course/models.py:346
+#: vbv_lernwelt/course/models.py:347
 msgid "Kompetenzweise ein/aus"
 msgstr ""
 
-#: vbv_lernwelt/course/models.py:349
+#: vbv_lernwelt/course/models.py:350
 msgid "Versicherungsvermittler-Lehrgang"
 msgstr ""
 
-#: vbv_lernwelt/course/models.py:350
+#: vbv_lernwelt/course/models.py:351
 msgid "ÜK-Lehrgang"
 msgstr ""
 
@@ -119,31 +119,44 @@ msgstr ""
 msgid "export_anwesenheit"
 msgstr "esportazione_presenza"
 
-#: vbv_lernwelt/course_session/services/export_attendance.py:92
+#: vbv_lernwelt/course_session/services/export_attendance.py:86
+#| msgid "Anwesenheit"
+msgid "Optionale Anwesenheit"
+msgstr "Presenza opzionale"
+
+#: vbv_lernwelt/course_session/services/export_attendance.py:96
 msgid "Anwesenheit"
 msgstr "Presenza"
 
-#: vbv_lernwelt/course_session/services/export_attendance.py:117
+#: vbv_lernwelt/course_session/services/export_attendance.py:119
+msgid "Ja"
+msgstr "Sì"
+
+#: vbv_lernwelt/course_session/services/export_attendance.py:119
+msgid "Nein"
+msgstr "No"
+
+#: vbv_lernwelt/course_session/services/export_attendance.py:128
 msgid "Anwesend"
 msgstr "Presente"
 
-#: vbv_lernwelt/course_session/services/export_attendance.py:117
+#: vbv_lernwelt/course_session/services/export_attendance.py:128
 msgid "Nicht anwesend"
 msgstr "Non presente"
 
-#: vbv_lernwelt/course_session/services/export_attendance.py:124
+#: vbv_lernwelt/course_session/services/export_attendance.py:135
 msgid "Vorname"
 msgstr "Nome"
 
-#: vbv_lernwelt/course_session/services/export_attendance.py:125
+#: vbv_lernwelt/course_session/services/export_attendance.py:136
 msgid "Nachname"
 msgstr "Cognome"
 
-#: vbv_lernwelt/course_session/services/export_attendance.py:126
+#: vbv_lernwelt/course_session/services/export_attendance.py:137
 msgid "Email"
 msgstr "Email"
 
-#: vbv_lernwelt/course_session/services/export_attendance.py:127
+#: vbv_lernwelt/course_session/services/export_attendance.py:138
 msgid "Lehrvertragsnummer"
 msgstr "Numero di contratto di tirocinio"
 
diff --git a/server/vbv_lernwelt/course_session/tests/test_attendance_export.py b/server/vbv_lernwelt/course_session/tests/test_attendance_export.py
index 350ffaa4..eb217f4b 100644
--- a/server/vbv_lernwelt/course_session/tests/test_attendance_export.py
+++ b/server/vbv_lernwelt/course_session/tests/test_attendance_export.py
@@ -8,7 +8,7 @@ from vbv_lernwelt.core.constants import TEST_STUDENT1_USER_ID, TEST_STUDENT2_USE
 from vbv_lernwelt.core.create_default_users import create_default_users
 from vbv_lernwelt.core.models import User
 from vbv_lernwelt.course.creators.test_course import create_test_course
-from vbv_lernwelt.course.models import CourseSession
+from vbv_lernwelt.course.models import CourseSession, CourseSessionUser
 from vbv_lernwelt.course_session.services.export_attendance import export_attendance
 
 
@@ -42,6 +42,11 @@ class AttendanceExportTestCase(ExportBaseTestCase):
         self.test_student1 = User.objects.get(id=TEST_STUDENT1_USER_ID)
         self.test_student1.additional_json_data = {"Lehrvertragsnummer": 1234567890}
         self.test_student1.save()
+        csu1 = CourseSessionUser.objects.get(
+            user=self.test_student1, course_session=self.course_session_be
+        )
+        csu1.optional_attendance = True
+        csu1.save()
         self.test_student2 = User.objects.get(id=TEST_STUDENT2_USER_ID)
         self.test_student2.additional_json_data = {"Lehrvertragsnummer": 1987654321}
         self.test_student2.save()
@@ -64,6 +69,7 @@ class AttendanceExportTestCase(ExportBaseTestCase):
                 self.test_student1.last_name,
                 self.test_student1.email,
                 self.test_student1.additional_json_data["Lehrvertragsnummer"],
+                "Ja",
                 "Anwesend",
             ],
             [
@@ -71,6 +77,7 @@ class AttendanceExportTestCase(ExportBaseTestCase):
                 self.test_student2.last_name,
                 self.test_student2.email,
                 self.test_student2.additional_json_data["Lehrvertragsnummer"],
+                "Nein",
                 "Nicht anwesend",
             ],
             [
@@ -78,6 +85,7 @@ class AttendanceExportTestCase(ExportBaseTestCase):
                 self.test_student3.last_name,
                 self.test_student3.email,
                 None,
+                "Nein",
                 "Nicht anwesend",
             ],
         ]
@@ -95,6 +103,7 @@ class AttendanceExportTestCase(ExportBaseTestCase):
             "Nachname",
             "Email",
             "Lehrvertragsnummer",
+            "Optionale Anwesenheit",
             f"Anwesenheit {csac.get_circle().title} {csac.due_date.start.strftime('%d.%m.%Y')}",
         ]
 
@@ -103,7 +112,7 @@ class AttendanceExportTestCase(ExportBaseTestCase):
         self.assertEqual(len(wb.sheetnames), 1)
         self.assertEqual(wb.sheetnames[0], "Test Bern 2022 a")
 
-        self._check_export(wb, self.expected_data_be, 4, 5)
+        self._check_export(wb, self.expected_data_be, 4, 6)
 
     def test_attendance_export_multiple_cs(self):
         self.attendance_course_zh.attendance_user_list = [
@@ -123,6 +132,7 @@ class AttendanceExportTestCase(ExportBaseTestCase):
                 self.test_student2.last_name,
                 self.test_student2.email,
                 self.test_student2.additional_json_data["Lehrvertragsnummer"],
+                "Nein",
                 "Anwesend",
             ],
         ]
@@ -136,10 +146,10 @@ class AttendanceExportTestCase(ExportBaseTestCase):
         self.assertEqual(wb.sheetnames[0], "Test Bern 2022 a")
         self.assertEqual(wb.sheetnames[1], "Test Zürich 2022 a")
 
-        self._check_export(wb, self.expected_data_be, 4, 5)
+        self._check_export(wb, self.expected_data_be, 4, 6)
 
         wb.active = wb["Test Zürich 2022 a"]
-        self._check_export(wb, expected_data_zh, 2, 5)
+        self._check_export(wb, expected_data_zh, 2, 6)
 
     def test_french_export(self):
         activate("fr")
@@ -150,6 +160,7 @@ class AttendanceExportTestCase(ExportBaseTestCase):
             "Nom de famille",
             "E-mail",
             "Numéro de contrat d'apprentissage",
+            "Présence facultative",
             f"Présence {self.attendance_course_be.get_circle().title} {self.attendance_course_be.due_date.start.strftime('%d.%m.%Y')}",
         ]
 
@@ -160,6 +171,7 @@ class AttendanceExportTestCase(ExportBaseTestCase):
                 self.test_student1.last_name,
                 self.test_student1.email,
                 self.test_student1.additional_json_data["Lehrvertragsnummer"],
+                "Oui",
                 "Présent",
             ],
             [
@@ -167,6 +179,7 @@ class AttendanceExportTestCase(ExportBaseTestCase):
                 self.test_student2.last_name,
                 self.test_student2.email,
                 self.test_student2.additional_json_data["Lehrvertragsnummer"],
+                "Non",
                 "Pas présent",
             ],
             [
@@ -174,10 +187,11 @@ class AttendanceExportTestCase(ExportBaseTestCase):
                 self.test_student3.last_name,
                 self.test_student3.email,
                 None,
+                "Non",
                 "Pas présent",
             ],
         ]
-        self._check_export(wb, expected_data_be, 4, 5)
+        self._check_export(wb, expected_data_be, 4, 6)
 
     def test_italian_export(self):
         activate("it")
@@ -188,6 +202,7 @@ class AttendanceExportTestCase(ExportBaseTestCase):
             "Cognome",
             "Email",
             "Numero di contratto di tirocinio",
+            "Presenza opzionale",
             f"Presenza {self.attendance_course_be.get_circle().title} {self.attendance_course_be.due_date.start.strftime('%d.%m.%Y')}",
         ]
 
@@ -198,6 +213,7 @@ class AttendanceExportTestCase(ExportBaseTestCase):
                 self.test_student1.last_name,
                 self.test_student1.email,
                 self.test_student1.additional_json_data["Lehrvertragsnummer"],
+                "Sì",
                 "Presente",
             ],
             [
@@ -205,6 +221,7 @@ class AttendanceExportTestCase(ExportBaseTestCase):
                 self.test_student2.last_name,
                 self.test_student2.email,
                 self.test_student2.additional_json_data["Lehrvertragsnummer"],
+                "No",
                 "Non presente",
             ],
             [
@@ -212,7 +229,8 @@ class AttendanceExportTestCase(ExportBaseTestCase):
                 self.test_student3.last_name,
                 self.test_student3.email,
                 None,
+                "No",
                 "Non presente",
             ],
         ]
-        self._check_export(wb, expected_data_be, 4, 5)
+        self._check_export(wb, expected_data_be, 4, 6)