Tips on Customizing Responsive Modern Slider

How to Hide Responsive Modern Slider Admin Menus

function plt_hide_responsive_modern_slider_menus() {
	//Hide "Slider".
	remove_menu_page('edit.php?post_type=slider');
	//Hide "Slider → All sliders".
	remove_submenu_page('edit.php?post_type=slider', 'edit.php?post_type=slider');
	//Hide "Slider → Add New slider".
	remove_submenu_page('edit.php?post_type=slider', 'post-new.php?post_type=slider');

	//Hide "IDP Slider".
	remove_menu_page('responsive-modern-slider.php');
	//Hide "IDP Slider → IDP Slider".
	remove_submenu_page('responsive-modern-slider.php', 'responsive-modern-slider.php');
	//Hide "IDP Slider → IDP Slider setting".
	remove_submenu_page('responsive-modern-slider.php', 'idp-slider-lite-options');
}

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

Where do I put this code?

How to Hide the "Slider" Meta Box

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

	//Hide the "Slider" meta box.
	remove_meta_box('idpsliderlite_slider', $screen->id, 'normal');
}

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