Tips on Customizing Web Developer's Portfolio

How to Hide Web Developer's Portfolio Plugin Admin Menus

function plt_hide_web_developers_portfolio_plugin_menus() {
	//Hide "Web Developers Portfolio".
	remove_menu_page('web_developers_portfolio');

	//Hide "Portfolio".
	remove_menu_page('edit.php?post_type=portfolio');
	//Hide "Portfolio → All Portfolio Items".
	remove_submenu_page('edit.php?post_type=portfolio', 'edit.php?post_type=portfolio');
	//Hide "Portfolio → Add New".
	remove_submenu_page('edit.php?post_type=portfolio', 'post-new.php?post_type=portfolio');
}

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

Where do I put this code?

How to Hide Web Developer's Portfolio Plugin Meta Boxes

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

	//Hide the "Project Link" meta box.
	remove_meta_box('wdp-projects-meta', $screen->id, 'side');
	//Hide the "Mobile Image" meta box.
	remove_meta_box('mobileimagediv', $screen->id, 'side');
}

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