diff --git a/messages/uniworx/de-de-formal.msg b/messages/uniworx/de-de-formal.msg
index 0baaa428f..9992ad69a 100644
--- a/messages/uniworx/de-de-formal.msg
+++ b/messages/uniworx/de-de-formal.msg
@@ -1739,6 +1739,9 @@ ExamUserMarkedSynchronised n@Int: #{n} #{pluralDE n "Prüfungsleistung" "Prüfun
 
 ExternalExamUserMarkSynchronisedCsv: Prüfungsleistungen beim Export als synchronisiert markieren
 ExternalExamUserMarkedSynchronised n@Int: #{n} #{pluralDE n "Prüfungsleistung" "Prüfungsleistungen"} als synchronisiert markiert
+ExternalExamOccurrenceEdited n@Int: #{n} Termine editiert
+ExternalExamResultEdited n@Int: #{n} Prüfungsergebnisse editiert
+ExternalExamUserDeleted n@Int: #{n} Prüfungsteilnehmer entfernt
 
 ExamOfficeExamUsersHeading: Prüfungsleistungen
 
diff --git a/messages/uniworx/en-eu.msg b/messages/uniworx/en-eu.msg
index 3c551257c..d11a41bf9 100644
--- a/messages/uniworx/en-eu.msg
+++ b/messages/uniworx/en-eu.msg
@@ -1730,7 +1730,10 @@ ExamUserMarkSynchronisedCsvTip: Should all exam achievements, that are included
 ExamUserMarkedSynchronised n: Successfully marked #{n} #{pluralEN n "exam achievement" "exam achievements"} as synchronised
 
 ExternalExamUserMarkSynchronisedCsv: Mark exam achievements as synchronised while exporting
-ExternalExamUserMarkedSynchronised n: Successfully marked #{n} #{pluralEN n "exam achievement" "exam achievements"} as synchronised
+ExternalExamUserMarkedSynchronised n: Successfully marked #{n} #{pluralEN n "exam result" "exam results"} as synchronised
+ExternalExamOccurrenceEdited n: Successfully edited #{n} #{pluralEN n "occurrence" "occurrences"}
+ExternalExamResultEdited n: Successfully edited #{n} #{pluralEN n "exam result" "exam results"}
+ExternalExamUserDeleted n: Successfully deleted #{n} #{pluralEN n "exam participant" "exam participants"}
 
 ExamOfficeExamUsersHeading: Exam achievements
 
diff --git a/src/Handler/ExamOffice/ExternalExam.hs b/src/Handler/ExamOffice/ExternalExam.hs
index c3ae6c290..28fa71e37 100644
--- a/src/Handler/ExamOffice/ExternalExam.hs
+++ b/src/Handler/ExamOffice/ExternalExam.hs
@@ -21,9 +21,27 @@ postEEGradesR tid ssh coursen examn = do
         return . Just $ do
           addMessageI Success $ MsgExamUserMarkedSynchronised (length selectedResults)
           redirect $ EExamR tid ssh coursen examn EEGradesR
-      (ExternalExamUserEditOccurrenceData _, _) -> error "EditOccurrence not implemented"
-      (ExternalExamUserEditResultData _, _) -> error "EditResult not implemented"
-      (ExternalExamUserDeleteData, _) -> error "Delete not implemented"
+
+      (ExternalExamUserEditOccurrenceData occ, selectedResults) -> do
+        -- TODO work in progress
+        forM_ selectedResults $ externalExamEditOccurrence occ
+        return . Just $ do
+          addMessageI Success $ MsgExternalExamOccurrenceEdited $ length selectedResults
+          redirect $ EExamR tid ssh coursen examn EEGradesR
+
+      (ExternalExamUserEditResultData examResult, selectedResults) -> do
+        -- TODO work in progress
+        forM_ selectedResults $ externalExamEditResult examResult
+        return . Just $ do
+          addMessageI Success $ MsgExternalExamResultEdited $ length selectedResults
+          redirect $ EExamR tid ssh coursen examn EEGradesR
+
+      (ExternalExamUserDeleteData, selectedResults) -> do
+        -- TODO work in progress
+        forM_ selectedResults externalExamDeleteUser
+        return . Just $ do
+          addMessageI Success $ MsgExternalExamUserDeleted $ length selectedResults
+          redirect $ EExamR tid ssh coursen examn EEGradesR
 
     return (usersResult', examUsersTable)
 
diff --git a/src/Handler/Utils/ExternalExam/Users.hs b/src/Handler/Utils/ExternalExam/Users.hs
index c3b27b7cd..84112e019 100644
--- a/src/Handler/Utils/ExternalExam/Users.hs
+++ b/src/Handler/Utils/ExternalExam/Users.hs
@@ -482,3 +482,22 @@ externalExamResultMarkSynchronised resId = do
                       }
                     | Entity _ UserFunction{..} <- userFunctions
                     ]
+
+externalExamEditOccurrence :: UTCTime -> ExternalExamResultId -> DB ()
+externalExamEditOccurrence _ _ = do
+  --uid <- requireAuthId
+  --now <- liftIO getCurrentTime
+  -- TODO work in progress
+  return ()
+
+externalExamEditResult :: ExamResultPassedGrade -> ExternalExamResultId -> DB ()
+externalExamEditResult _ _ = do
+  --uid <- requireAuthId
+  --now <- liftIO getCurrentTime
+  -- TODO work in progress
+  return ()
+
+externalExamDeleteUser :: ExternalExamResultId -> DB ()
+externalExamDeleteUser _ = do
+  -- TODO work in progress
+  return ()