Tips on Customizing Content Locker

How to Hide Content Locker Admin Menus

function plt_hide_content_locker_menus() {
	//Hide "Content Locker".
	remove_menu_page('edit.php?post_type=content-locker');
	//Hide "Content Locker → All Lockers".
	remove_submenu_page('edit.php?post_type=content-locker', 'edit.php?post_type=content-locker');
	//Hide "Content Locker → + Social Locker".
	remove_submenu_page('edit.php?post_type=content-locker', 'post-new.php?post_type=content-locker&cl_item_type=social-locker');
	//Hide "Content Locker → + Sign-In Locker".
	remove_submenu_page('edit.php?post_type=content-locker', 'post-new.php?post_type=content-locker&cl_item_type=signin-locker');
	//Hide "Content Locker → Leads (0)".
	remove_submenu_page('edit.php?post_type=content-locker', 'edit.php?post_type=cl-lead');
	//Hide "Content Locker → Settings".
	remove_submenu_page('edit.php?post_type=content-locker', 'cl-settings');
	//Hide "Content Locker → How to use?".
	remove_submenu_page('edit.php?post_type=content-locker', 'cl-help');
}

add_action('admin_menu', 'plt_hide_content_locker_menus', 13);

Where do I put this code?

How to Hide Content Locker Meta Boxes

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

	//Hide the "Basic Options" meta box.
	remove_meta_box('cl-basic-options', $screen->id, 'normal');
	//Hide the "Visibility Options" meta box.
	remove_meta_box('cl-visibility-options', $screen->id, 'normal');
	//Hide the "Advance Options" meta box.
	remove_meta_box('cl-advance-options', $screen->id, 'normal');
	//Hide the "Manual Locking (recommended)" meta box.
	remove_meta_box('cl-manual-locking', $screen->id, 'side');
}

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