Tips on Customizing Molongui Authorship – Author Boxes, Guest Authors & Co-Authors for WordPress

How to Hide Molongui Authorship Admin Menus

function plt_hide_molongui_authorship_menus() {
	//Hide "Posts → Authors".
	remove_submenu_page('edit.php', 'admin.php?page=authors');
	//Hide "Appearance → Author Box".
	remove_submenu_page('themes.php', 'http://127.0.0.1/wp-admin/admin.php?page=author-box-editor');

	//Hide "Authors".
	remove_menu_page('authors');
	//Hide "Authors → View Authors".
	remove_submenu_page('authors', 'authors');
	//Hide "Authors → Add Author".
	remove_submenu_page('authors', 'author-new');
	//Hide "Authors → Author Box Editor".
	remove_submenu_page('authors', 'author-box-editor');
	//Hide "Authors → Settings".
	remove_submenu_page('authors', 'molongui-authorship');
	//Hide "Authors → Tools".
	remove_submenu_page('authors', 'http://127.0.0.1/wp-admin/admin.php?page=molongui-authorship&tab=tools');
	//Hide "Authors → Help!".
	remove_submenu_page('authors', 'http://127.0.0.1/wp-admin/admin.php?page=molongui-authorship&tab=help');

	//Hide "Settings → Authors".
	remove_submenu_page('options-general.php', 'http://127.0.0.1/wp-admin/admin.php?page=molongui-authorship');
	//Hide "Settings → Author Box".
	remove_submenu_page('options-general.php', 'http://127.0.0.1/wp-admin/admin.php?page=author-box-editor');
}

add_action('admin_menu', 'plt_hide_molongui_authorship_menus', 2147483647);

Where do I put this code?

How to Hide Molongui Authorship Meta Boxes

function plt_hide_molongui_authorship_metaboxes() {
	$screen = get_current_screen();
	if ( !$screen ) {
		return;
	}

	//Hide the "Authors" meta box.
	remove_meta_box('molongui-post-authors-box', $screen->id, 'side');
	//Hide the "Contributors" meta box.
	remove_meta_box('molongui-post-contributors-box', $screen->id, 'side');
	//Hide the "Author Box" meta box.
	remove_meta_box('molongui-author-box-box', $screen->id, 'side');
}

add_action('add_meta_boxes', 'plt_hide_molongui_authorship_metaboxes', 20);