Tips on Customizing Logo Showcase Ultimate – Logo Carousel, Logo Slider & Logo Grid

How to Hide Logo Showcase Ultimate Admin Menus

function plt_hide_logo_showcase_ultimate_menus() {
	//Hide "Logo Showcase".
	remove_menu_page('edit.php?post_type=lcg_mainpost');
	//Hide "Logo Showcase → All Logos".
	remove_submenu_page('edit.php?post_type=lcg_mainpost', 'edit.php?post_type=lcg_mainpost');
	//Hide "Logo Showcase → Add New logo".
	remove_submenu_page('edit.php?post_type=lcg_mainpost', 'post-new.php?post_type=lcg_mainpost');
	//Hide "Logo Showcase → Logo Categories".
	remove_submenu_page('edit.php?post_type=lcg_mainpost', 'edit-tags.php?taxonomy=lcg_category&post_type=lcg_mainpost');
	//Hide "Logo Showcase → Shortcode Generator".
	remove_submenu_page('edit.php?post_type=lcg_mainpost', 'edit.php?post_type=lcg_shortcode');
	//Hide "Logo Showcase → Usage & Support".
	remove_submenu_page('edit.php?post_type=lcg_mainpost', 'lcg_usage_support');
}

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

Where do I put this code?

How to Hide Logo Showcase Ultimate Meta Boxes

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

	//Hide the "Logo" meta box.
	remove_meta_box('postimagediv', $screen->id, 'normal');
	//Hide the "URL & Tooltip Settings" meta box.
	remove_meta_box('lcg_metabox', $screen->id, 'normal');
	//Hide the "Shortcode Generator and Settings" meta box.
	remove_meta_box('lcg_sg_metabox', $screen->id, 'normal');
}

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