Tips on Customizing PublishPress Shortlinks – Custom URLs for Posts and External Links – Share Previews for Draft Posts

How to Hide PublishPress Shortlinks Free Admin Menus

function plt_hide_tinypress_menus() {
	//Hide "Shortlinks".
	remove_menu_page('edit.php?post_type=tinypress_link');
	//Hide "Shortlinks → All Shortlinks".
	remove_submenu_page('edit.php?post_type=tinypress_link', 'edit.php?post_type=tinypress_link');
	//Hide "Shortlinks → Add Shortlink".
	remove_submenu_page('edit.php?post_type=tinypress_link', 'post-new.php?post_type=tinypress_link');
	//Hide "Shortlinks → Categories".
	remove_submenu_page('edit.php?post_type=tinypress_link', 'edit-tags.php?taxonomy=tinypress_link_cat&post_type=tinypress_link');
	//Hide "Shortlinks → Logs".
	remove_submenu_page('edit.php?post_type=tinypress_link', 'tinypress-logs');
	//Hide "Shortlinks → Import / Export".
	remove_submenu_page('edit.php?post_type=tinypress_link', 'tinypress-import-export');
	//Hide "Shortlinks → Settings".
	remove_submenu_page('edit.php?post_type=tinypress_link', 'settings');
	//Hide "Shortlinks → Upgrade to Pro".
	remove_submenu_page('edit.php?post_type=tinypress_link', 'https://publishpress.com/links/shortlinks-menu');
}

add_action('admin_menu', 'plt_hide_tinypress_menus', 10000);

Where do I put this code?

How to Hide PublishPress Shortlinks Free Meta Boxes

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

	//Hide the "Shortlinks" meta box.
	remove_meta_box('tinypress_shortlinks_post', $screen->id, 'side');
	//Hide the "Side" meta box.
	remove_meta_box('tinypress-meta-side', $screen->id, 'side');
	//Hide the "PublishPress Shortlinks" meta box.
	remove_meta_box('tinypress_meta_main', $screen->id, 'normal');
	//Hide the "Shortlinks" meta box.
	remove_meta_box('tinypress_shortlinks_page', $screen->id, 'side');
}

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