Hi @keigonomura,
You can use the PO_ResetDisplayName command to reset the display names to a new format. Here is a recording that shows how to do what you asked for.
Now, as you might have already noticed, the display names won’t be exported to the IDF/OSM files. That means when you are happy with the display names, you need to use the PO_ResetIdentifiers to reset the identifiers based on the display name. Here is a recording that shows how to do that. You have to make sure all the display names are unique otherwise resetting the identifiers results in an invalid model.
Make sure that you re-run the solve adjacency after resetting the identifiers.