Tips on Customizing RestroPress – Online Food Ordering System

How to Hide RestroPress Admin Menus

function plt_hide_restropress_menus() {
	//Hide "RestroPress".
	remove_menu_page('restropress');
	//Hide "RestroPress → Dashboard".
	remove_submenu_page('restropress', 'rpress-dashboard');
	//Hide "RestroPress → Orders".
	remove_submenu_page('restropress', 'rpress-payment-history');
	//Hide "RestroPress → Customers".
	remove_submenu_page('restropress', 'rpress-customers');
	//Hide "RestroPress → Discount Codes".
	remove_submenu_page('restropress', 'rpress-discounts');
	//Hide "RestroPress → Reports".
	remove_submenu_page('restropress', 'rpress-reports');
	//Hide "RestroPress → Settings".
	remove_submenu_page('restropress', 'rpress-settings');
	//Hide "RestroPress → Tools".
	remove_submenu_page('restropress', 'rpress-tools');
	//Hide "RestroPress → Extensions".
	remove_submenu_page('restropress', 'rpress-extensions');

	//Hide "Food Items".
	remove_menu_page('edit.php?post_type=fooditem');
	//Hide "Food Items → All Food Items".
	remove_submenu_page('edit.php?post_type=fooditem', 'edit.php?post_type=fooditem');
	//Hide "Food Items → Add New".
	remove_submenu_page('edit.php?post_type=fooditem', 'post-new.php?post_type=fooditem');
	//Hide "Food Items → Categories".
	remove_submenu_page('edit.php?post_type=fooditem', 'edit-tags.php?taxonomy=food-category&post_type=fooditem');
	//Hide "Food Items → Addons".
	remove_submenu_page('edit.php?post_type=fooditem', 'edit-tags.php?taxonomy=addon_category&post_type=fooditem');
	//Hide "Food Items → Tags".
	remove_submenu_page('edit.php?post_type=fooditem', 'edit-tags.php?taxonomy=fooditem_tag&post_type=fooditem');
}

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

Where do I put this code?

How to Hide the "Food Item Data" Meta Box

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

	//Hide the "Food Item Data" meta box.
	remove_meta_box('rpress-fooditem-data', $screen->id, 'normal');
}

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

How to Hide the "RestroPress Sales Summary" Dashboard Widget

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

	//Remove the "RestroPress Sales Summary" widget.
	remove_meta_box('rpress_dashboard_sales', 'dashboard', 'normal');
}

add_action('wp_dashboard_setup', 'plt_hide_restropress_dashboard_widgets', 20);