Tips on Customizing ERI File Library

How to Hide ERI File Library Admin Menus

function plt_hide_eri_file_library_menus() {
	//Hide "Files".
	remove_menu_page('edit.php?post_type=erifl-files');
	//Hide "Files → All Files".
	remove_submenu_page('edit.php?post_type=erifl-files', 'edit.php?post_type=erifl-files');
	//Hide "Files → Add New File".
	remove_submenu_page('edit.php?post_type=erifl-files', 'post-new.php?post_type=erifl-files');
	//Hide "Files → Formats".
	remove_submenu_page('edit.php?post_type=erifl-files', 'edit-tags.php?taxonomy=erifl-formats&post_type=erifl-files');
	//Hide "Files → Resource Types".
	remove_submenu_page('edit.php?post_type=erifl-files', 'edit-tags.php?taxonomy=erifl-resource-types&post_type=erifl-files');
	//Hide "Files → Target Audiences".
	remove_submenu_page('edit.php?post_type=erifl-files', 'edit-tags.php?taxonomy=erifl-target-audiences&post_type=erifl-files');
	//Hide "Files → Settings".
	remove_submenu_page('edit.php?post_type=erifl-files', 'eri_file_library_settings');
	//Hide "Files → About".
	remove_submenu_page('edit.php?post_type=erifl-files', 'eri_file_library_about');
}

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

Where do I put this code?

How to Hide ERI File Library Meta Boxes

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

	//Hide the "File URL" meta box.
	remove_meta_box('erifl_url', $screen->id, 'normal');
	//Hide the "File Description" meta box.
	remove_meta_box('erifl_description', $screen->id, 'normal');
	//Hide the "Download Requirements" meta box.
	remove_meta_box('erifl_requirements', $screen->id, 'normal');
	//Hide the "Download Count" meta box.
	remove_meta_box('erifl_download_count', $screen->id, 'normal');
	//Hide the "Instructions" meta box.
	remove_meta_box('erifl_instructions', $screen->id, 'normal');
	//Hide the "Where Used" meta box.
	remove_meta_box('erifl_where_used', $screen->id, 'normal');
}

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