Thanks, but this appears wholly inadequate.

First, and mostly, it doesn't work. When I do the step to "Restrict Editing" the fields I've input beneath the initial one disappear. With no rhyme, reason, or explanation, they're just gone.

Second, I don't yet see how to make this work for more than one field. But, to be fair, that may be because this has yet to work for even one, as described above.

Third, is this ever going to work across documents?