When creating a hunt group/ring group, where can you change the DN for all the devices at once?

The Hunt Pilot is the top-level configuration object in Cisco UCM that contains the directory number callers dial to reach the entire hunt group. Updating the DN on the Hunt Pilot immediately changes the group-wide entry point, cascading that change across all associated devices in the linked Hunt List and Line Groups without requiring per-device edits.

A Route Pilot is not a standard Cisco UCM hunt group object and plays no role in defining or modifying the DN shared across devices in a hunt group.

A Group File is not a valid Cisco UCM configuration construct for hunt groups - hunt groups are built from Hunt Pilots, Hunt Lists, and Line Groups, not a file object.

The Hunt List organizes Line Groups into a prioritized sequence for call distribution but does not hold the dialed DN - that function belongs exclusively to the Hunt Pilot.