How to Lock a Node for Editing in Drupal 9
One of the stranger things NOT included in Drupal 9 is a way to lock a node for editing. Out of the box, two (or more) people can be editing the same node at the same time. Whoever hits "Save" first will "win" and everyone else will lose their changes.
In this video, Rod demonstrates the Content Locking contributed module (https://www.drupal.org/project/conten.... It does everything you need including unlocking "stale" nodes after a time period of your choice.
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