What configuration allows students to change class registration during specific stages?

The correct answer focuses on the concept of stage-only optional actions, which are a key feature in Pega's case lifecycle management. This configuration allows users to perform specific actions or make changes at designated stages within a case. In the context of the given scenario, enabling students to modify their class registrations during certain stages of the process fosters a controlled environment where changes can be managed effectively based on predetermined criteria.

Utilizing stage-only optional actions ensures that the modification of class registration aligns with the overall flow of the case, allowing for relevant business logic to dictate when and how these changes can occur. This enhances both the user experience and adherence to business rules by limiting the ability to alter registrations only to phases in the process where such changes are appropriate.

Other options do not directly address the specific requirement of allowing changes at selected stages. General permissions at the case level pertain to broader access controls rather than targeted changes during specific stages. Dynamic class swapping refers to the ability to change the class of a case but does not inherently dictate the timing of when students can register or unregister for classes. Scheduled updates for class schedules do not facilitate direct actions by students but rather involve backend processes that could disrupt the real-time decision-making environment needed for registration changes.