I've read all the docs about securing Survey123 forms that collect public information ("Limiting Access to Public Survey123 Results" and https://community.esri.com/t5/arcgis-survey123-blog/securing-data-in-public-surveys-survey123-web/ba-p/898102). What those documents don't address is a situation like ours where we need to collect info from the public but also need our group to be able to update and edit those forms (either by the mode=edit URL parameter or through the Survey123 Data tab).
Based on what I'd read in the documents, I thought that we could take the _stakeholder view and enable editing on that and only share it with the group needing to edit it. That didn't work and we still get notified that we can't edit submissions from other users. I'm hesitant to edit the Settings on the main Survey layer or the _fieldworker layer, though, because those docs seem to suggest that enabling editing on either layer will expose that data publicly, which we definitely don't want.
What are the proper settings for the various layers (Survey layer, _fieldworker, and _stakeholder) to allow only a specific group to edit the information submitted by anonymous/public users without exposing the entries to the public?