In my latest Drupal 8 tutorial over at WebWash, I write about how to customize content pages or, put another way, entity bundles.
Display Suite is a versatile piece of software. It converts “Manage display” page from a basic reordering interface to a drag-and-drop interface.
Instead of just moving fields up or down, you can add them to multiple regions, if the layout supports it.
Link: Using Display Suite in Drupal 8: How to Customize Content Pages