If none of the fields added already accurately describe the field of your syllabi, you can add one at the bottom of the fields page. Additionally, when creating a new syllabi, you can select 'other' for field and specify the new field in the text field that appears next to the field dropdown. If you created the wrong field, just add a new one and you can then change your syllabi's field to the new one. Don't worry about deleting the old field - if it needs to be deleted, an administrator will delete it.