Preparation: Edit the single show in question (on its highest level – not on the season, nor episode level) and assign it a “sharing label”.
Now, go here: https://app.plex.tv/desktop/#!/settings/plex-home
Click on the user name of your oldest.
Now, on the Restrictions tab
- ensure an age group (i.e. a “Restriction Profile”) is NOT assigned to that user. If there is, set it to “None”, then Save Changes. Then leave this screen, and re-enter it. You will notice that there are now additional selectors for Movies, Shows, and Music.
- Edit each media category and insert all allowed age ratings into “Allow Only Ratings”
- Click on Shows and insert the name of the Sharing Label from above into “Allow Only Labels”
You now better perform Switch User on your kid’s Plex clients back and forth between different user accounts. This ensures that the client is fetching the freshly edited access permissions.
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Official documentation: https://support.plex.tv/articles/204232573-restricting-the-shares/
