Tips on Customizing Stionic Core – Create Mobile app for WordPress news

How to Hide Stionic Core Admin Menus

function plt_hide_stionic_core_menus() {
	//Hide "Stionic".
	remove_menu_page('stionic');
	//Hide "Stionic → General".
	remove_submenu_page('stionic', 'stionic');
	//Hide "Stionic → Categories".
	remove_submenu_page('stionic', 'stionic-categories');
	//Hide "Stionic → Media".
	remove_submenu_page('stionic', 'stionic-media');
	//Hide "Stionic → DeepLinks".
	remove_submenu_page('stionic', 'stionic-deeplinks');
	//Hide "Stionic → OneSignal".
	remove_submenu_page('stionic', 'stionic-onesignal');
}

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

Where do I put this code?

How to Hide the "Stionic application" Meta Box

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

	//Hide the "Stionic application" meta box.
	remove_meta_box('stionic-application', $screen->id, 'side');
}

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