public function loadDataGrid()
{
$this->dataGrid = new BackendDataGridDB(BackendGroupsModel::QRY_BROWSE);
// check if this action is allowed
if (BackendAuthentication::isAllowedAction('Edit')) {
$this->dataGrid->setColumnURL('name', BackendModel::createURLForAction('Edit') . '&id=[id]');
$this->dataGrid->setColumnURL('num_users', BackendModel::createURLForAction('Edit') . '&id=[id]#tabUsers');
$this->dataGrid->addColumn('edit', null, BL::lbl('Edit'), BackendModel::createURLForAction('Edit') . '&id=[id]');
}
}