For those schools wanting the system to begin charging a late fee during the fall semester but do not want spring-only AP classes charged the same late fee, you can create Periods specific to the spring-only class and note that the period is exempt from the late fee. Simply go to AP > Configure AP Registration > Manage/Set Up Periods, click Add New Period, type the period name (indicate it is a spring-semester only class, if needed), click the Exempt from Late Fee check box, and click Save Period.
You can then edit the AP exam for the Manage AP Exams page to link this new Period to the exam and teacher.