Tips on Customizing Easy 3D Viewer

How to Hide the "Woo 3D Viewer" Admin Menu

function plt_hide_woo_3d_viewer_menus() {
	//Hide the "Woo 3D Viewer" menu.
	remove_menu_page('woo3dv');
}

add_action('admin_menu', 'plt_hide_woo_3d_viewer_menus', 11);

Where do I put this code?

How to Hide the "Product model" Meta Box

function plt_hide_woo_3d_viewer_metaboxes() {
	$screen = get_current_screen();
	if ( !$screen ) {
		return;
	}

	//Hide the "Product model" meta box.
	remove_meta_box('woo3dv-product-model', $screen->id, 'side');
}

add_action('add_meta_boxes', 'plt_hide_woo_3d_viewer_metaboxes', 20);