Tips on Customizing Qode Essential Addons

How to Hide Qode Essential Addons Admin Menus

function plt_hide_qode_essential_addons_menus() {
	//Hide "Qode Essential Addons".
	remove_menu_page('qode_essential_addons_general_menu');

	//Hide "Qode Portfolio".
	remove_menu_page('edit.php?post_type=portfolio-item');
	//Hide "Qode Portfolio → Qode Portfolio".
	remove_submenu_page('edit.php?post_type=portfolio-item', 'edit.php?post_type=portfolio-item');
	//Hide "Qode Portfolio → Add New Portfolio Item".
	remove_submenu_page('edit.php?post_type=portfolio-item', 'post-new.php?post_type=portfolio-item');
	//Hide "Qode Portfolio → Portfolio Categories".
	remove_submenu_page('edit.php?post_type=portfolio-item', 'edit-tags.php?taxonomy=portfolio-category&post_type=portfolio-item');
	//Hide "Qode Portfolio → Portfolio Tags".
	remove_submenu_page('edit.php?post_type=portfolio-item', 'edit-tags.php?taxonomy=portfolio-tag&post_type=portfolio-item');
}

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

Where do I put this code?

How to Hide the "Post Attributes" Meta Box

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

	//Hide the "Post Attributes" meta box.
	remove_meta_box('pageparentdiv', $screen->id, 'side');
}

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