Tips on Customizing Order Picking App

How to Hide Order Picking App Admin Menus

function plt_hide_order_picking_app_menus() {
	//Hide the "Order Picking App" menu.
	remove_menu_page('orderpickingapp-panel');
	//Hide the "Order Picking App → Order Picking App" menu.
	remove_submenu_page('orderpickingapp-panel', 'orderpickingapp-panel');
	//Hide the "Order Picking App → Packing" menu.
	remove_submenu_page('orderpickingapp-panel', 'orderpickingapp-packing');
}

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

Where do I put this code?

How to Hide Order Picking App Meta Boxes

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

	//Hide the "Order Picking App" meta box.
	remove_meta_box('opa-order-meta-box', $screen->id, 'side');
	//Hide the "Order Picking App | Stock mutations" meta box.
	remove_meta_box('order_picking_app_product_metabox', $screen->id, 'normal');
}

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