I can filter the adminhtml users grid to only show users with a specific role ID as code in
\app\code\local\Mage\Adminhtml\Block\Permissions\User\grid.php
=> for collection
protected function _prepareCollection() { $collection = Mage::getResourceModel('admin/user_collection'); $collection->getSelect()->join(array('ar' =>'admin_role'),'ar.user_id = admin_user.user_id') ->reset('columns')->columns(array('role_id')); $this->setCollection($collection); return parent::_prepareCollection(); } =>and for add column
protected function _prepareColumns() { parent::_prepareColumns(); $this->addColumn('role_id', array( 'header' =>Mage::helper('adminhtml')->__('Role ID'), 'index' =>'role_id', 'align' => 'right', 'width' => '50px' )); But still not getting roll id in column ..
