By default the WordPress SEO by Yoast plugin doesn’t allow editor level users to edit the main SEO settings. You may want to change this if you have somebody in charge of your SEO who you only want to have regular editor level privileges. This should be a setting on the plugin, but until they edit it you can use the code below to allow access to a specific user. Change the #3 to the user id that you want to give access to. Add this to your functions.php file.
// change the #3 to the user id $user = new WP_User( 3 ); $user->add_cap( 'manage_options');