Once you activate the plugin, it will automatically add an author box below every post on your WordPress website. However, if you wish to disable this feature and prevent the author box from being displayed, you can do so by following these steps:
Dashboard > WP Post Author > Setting > Global Setting > Tick the remove from post content and save the change
This allows you to have more control over the display of author information in your posts, giving you the flexibility to decide what author details should be shown.