How to Hide WP Project Manager Admin Menus

function plt_hide_wedevs_project_manager_menus() {
	//Hide "Project Manager".
	remove_menu_page('pm_projects');
	//Hide "Project Manager → Projects".
	remove_submenu_page('pm_projects', 'admin.php?page=pm_projects#/');
	//Hide "Project Manager → My Tasks".
	remove_submenu_page('pm_projects', 'admin.php?page=pm_projects#/my-tasks');
	//Hide "Project Manager → Categories".
	remove_submenu_page('pm_projects', 'admin.php?page=pm_projects#/categories');
	//Hide "Project Manager → Calendar".
	remove_submenu_page('pm_projects', 'admin.php?page=pm_projects#/calendar');
	//Hide "Project Manager → Progress".
	remove_submenu_page('pm_projects', 'admin.php?page=pm_projects#/progress');
	//Hide "Project Manager → Reports".
	remove_submenu_page('pm_projects', 'admin.php?page=pm_projects#/reports');
	//Hide "Project Manager → Modules".
	remove_submenu_page('pm_projects', 'admin.php?page=pm_projects#/modules');
	//Hide "Project Manager → Premium".
	remove_submenu_page('pm_projects', 'admin.php?page=pm_projects#/premium');
	//Hide "Project Manager → Settings".
	remove_submenu_page('pm_projects', 'admin.php?page=pm_projects#/settings');
	//Hide "Project Manager → Tools".
	remove_submenu_page('pm_projects', 'admin.php?page=pm_projects#/importtools');
}

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

Where do I put this code?