You can edit or delete your own posts only if your instructor has made those options available to you. You cannot edit or delete others' posts. If you post a message in error and the option to delete it is not available to you, contact your instructor.
Edit a forum When you need a forum, edit the forum to make it available. On the Discussion Board page, open a forum's menu and select Edit. On the Edit Forum page, change the forum's name, description, availability, or settings. Select Submit.
Open a thread in a forum. On the thread's page, point to a post to view the available functions. Select Edit or Delete. The delete action is irreversible.
Open the discussion's menu and select Delete. You can delete an entire discussion along with all responses and replies. Instructors can delete any discussion, while students can only delete discussions they've created. When students delete a discussion, other users see a message about the deletion.