If you pre-install URE to the site, input the license key or add it to WordPress configuration via PHP constant, like below:
// User Role Editor Pro License Code
define('URE_LICENSE_KEY', '5ae21 ... a75de');
and use has permissions to update plugins (update_plugins), there is not need to have access to URE settings. Such user will can install URE updates via ‘Dashboard->UPdates’ with any other plugin update together.
