Tips on Customizing Author Website Templates – Create Writer, Author & Publisher Websites Easily

How to Hide the "Author Templates" Admin Menu

function plt_hide_author_website_templates_menus() {
	//Hide the "Settings → Author Templates" menu.
	remove_submenu_page('options-general.php', 'awt-global-settings');
}

add_action('admin_menu', 'plt_hide_author_website_templates_menus', 11);

Where do I put this code?

How to Hide the "Author Template Options" Meta Box

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

	//Hide the "Author Template Options" meta box.
	remove_meta_box('awt_template_options', $screen->id, 'side');
}

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