Which design feature allows users to modify the shipping address at any time without disrupting the primary case?

The design feature that allows users to modify the shipping address at any time without disrupting the primary case is focused on the ability to maintain a seamless user experience while handling changes in information. This functionality typically involves having the option to transfer responsibility of a case or components of it without impacting the main workflow.

The correct answer highlights that users can transfer cases to another employee. This allows for the shipping address modifications to take place under the context of a separate task or by a different user, ensuring that the main case remains undisturbed. The ability to reassign tasks is crucial in scenarios where multiple employees may be involved in managing various aspects of a case, thus ensuring that any updates to the shipping address can be handled efficiently without interrupting the overall process.

In contrast, the other choices do not provide mechanisms specifically designed for modifying the shipping address without interfering with the primary case. Reassigning tasks after a specific time or requiring separate approvals for high-value orders introduces additional complexity rather than maintaining continuity. Similarly, sending random surveys focuses on customer feedback rather than case management, further distancing from the intent of modifying addresses seamlessly.