Tips on Customizing MD Click Copyboard

How to Hide MD Click Copyboard Admin Menus

function plt_hide_md_click_copyboard_menus() {
	//Hide the "Copy Elements" menu.
	remove_menu_page('edit.php?post_type=mdcc_copy_element');
	//Hide the "Copy Elements → All Elements" menu.
	remove_submenu_page('edit.php?post_type=mdcc_copy_element', 'edit.php?post_type=mdcc_copy_element');
	//Hide the "Copy Elements → New Element" menu.
	remove_submenu_page('edit.php?post_type=mdcc_copy_element', 'post-new.php?post_type=mdcc_copy_element');
}

add_action('admin_menu', 'plt_hide_md_click_copyboard_menus', 1001);

Where do I put this code?

How to Hide the "Copy Element Settings" Meta Box

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

	//Hide the "Copy Element Settings" meta box.
	remove_meta_box('mdcc_copy_element_settings', $screen->id, 'normal');
}

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