When you apply the security policy you can select to allow printing, while still forbidding editing of other kinds.
Thanks, Try67: using your prompt, I made changes to the security settings. That does make the document non-editable. It's not quite the answer I was looking for, though--I will try to articulate it better.
When I export a document to PDF from InDesign, Word, or other programs, the document comes over with editable properties. I don't want that. I want the document to arrive in Acrobat in a static condition. I don't want to edit text, images, or anything else. Is there an export function I need to select? If not possible, what can I do in Acrobat to remove the editability from the document while making it possible to forward to a superior to apply a signature?
Maybe I need to post this in an InDesign forum.