Tips on Customizing Logo Slider – Logo Showcase, Logo Carousel, Logo Gallery and Client Logo Presentation

How to Hide GS Logo Slider Lite Admin Menus

function plt_hide_gs_logo_slider_menus() {
	//Hide "GS Logos".
	remove_menu_page('edit.php?post_type=gs-logo-slider');
	//Hide "GS Logos → All Logos".
	remove_submenu_page('edit.php?post_type=gs-logo-slider', 'edit.php?post_type=gs-logo-slider');
	//Hide "GS Logos → Add New Logo".
	remove_submenu_page('edit.php?post_type=gs-logo-slider', 'post-new.php?post_type=gs-logo-slider');
	//Hide "GS Logos → Logo Category".
	remove_submenu_page('edit.php?post_type=gs-logo-slider', 'edit-tags.php?taxonomy=logo-category&post_type=gs-logo-slider');
	//Hide "GS Logos → Logo Shortcode".
	remove_submenu_page('edit.php?post_type=gs-logo-slider', 'gs-logo-shortcode');
	//Hide "GS Logos → Install Demo".
	remove_submenu_page('edit.php?post_type=gs-logo-slider', 'gs-logo-shortcode#/demo-data');
	//Hide "GS Logos → GS Plugins Pro".
	remove_submenu_page('edit.php?post_type=gs-logo-slider', 'gs-logo-plugins-premium');
	//Hide "GS Logos → GS Plugins Lite".
	remove_submenu_page('edit.php?post_type=gs-logo-slider', 'gs-logo-plugins-lite');
	//Hide "GS Logos → Help & Usage".
	remove_submenu_page('edit.php?post_type=gs-logo-slider', 'gs-logo-plugins-help');
}

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

Where do I put this code?

How to Hide GS Logo Slider Lite Meta Boxes

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

	//Hide the "Client's URL" meta box.
	remove_meta_box('gs_logo_slider_sectionid', $screen->id, 'normal');
	//Hide the "Secondary Image" meta box.
	remove_meta_box('gs_logo_media_upload', $screen->id, 'normal');
}

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