The Zotero CSL 1.0.2 Specification shows "editor" as variable name, and this name also appears in the CSL file for the IEEE style. But this name does not appear as a field for the Book type or for any of the other document types Zotero shows a user when they choose the IEEE style. So a user cannot enter the name of an editor.

So, how does one add the missing "editor" field to the Book type so a user can enter the name of an editor? Does the Zotero application need to be modified, or is there some other way to add it?

BTW, as a test, I modified the CSL file by removing all the document types. But Zotero still displays the same fields to the user. This makes me believe some (or all) the fields are hard coded for a document type.

Thanks.