As shown in video above, add code below to the bottom of your active themes functions.php file or better yet add it to the child themes function.php file .
If those are not yet possible then use a plugin called Code Snippets as demonstrated in the video.
function author_archive_redirect() { if( is_author() ) { wp_redirect( home_url(), 301 ); exit; } } add_action( 'template_redirect', 'author_archive_redirect' );