It would be good if the play Queues were separated per user (similar to Netflix). That way different users will see the content they prefer, can create extensive Queues to watch and overall just not affect one another’s viewing preferences. It feels bad when someone makes a long list of movies to binge, and then because someone else hopped on and clicked play on one episode from a series, it removes the previous Queue for the aforementioned user.
What you are describing can be solved by using different user accounts.
Plex Home’s ‘Fast User Switching’ makes this relatively easy.
https://support.plex.tv/articles/204232453-fast-user-switching/