Final Answer:
The information about the auto-allocated seats for WHCH is not provided; it depends on the specific context, event, or system in question.
Step-by-step explanation:
The term "WHCH" alone does not provide sufficient context to determine the auto-allocated seats. Auto-allocated seats could vary depending on the system or event, such as in the case of ticketing systems for venues, airlines, or conferences. In a transportation context, auto-allocated seats may refer to the automatic assignment of seats to passengers during the booking process.
For events, it might involve an automated system assigning seats to attendees based on preferences or availability. Without additional information about the specific use of "WHCH" and the associated system or event, it is not possible to specify the auto-allocated seats.