This code produce a new user group:
$object = $modx->newObject('modUserGroup');
$object->set('name', 'TestGrp');
$object->save();
But how to add a user ($modx->user) to that group?
Should I use $object->addone($modx->user) or shall I modify the user array of the modUserGroup before save or something else. I don’t know.
