Options for the field to override in date_occur_parent field settings show fields on other node types

In the beginning, but not implemented, was the idea to also allow having augmenter entities. Rather than close, overrride and replacing in the index as is implemented, these would another entity type that just has the fields to add/replace data on the original. So the possibility is still there in the original architecture, but wasn't something that was needed for the project the module was originally written for.