I added a new field for Customer Group. It called customer group email. I added the field and it displays in the backend but it doesn't save the data and I don't know How can I add Save action. I tried to add this code in the file that called
app/code/core/Mage/Adminhtml/controllers/Customer/GroupController.php
$groupEmail = $this->getRequest()->getParam('groupemail');
$customerGroup->setData($groupEmail)->setId($this->getRequest()->getParam('id'));
The added code in Form.php is:
$groupEmail = $fieldset->addField('customer_group_email', 'text',
array(
'name' => 'groupemail',
'label' => Mage::helper('customer')->__('Group email'),
'title' => Mage::helper('customer')->__('Group email'),
'note' => Mage::helper('customer')->__('Maximum length must be less then %s symbols', Mage_Customer_Model_Group::GROUP_CODE_MAX_LENGTH),
'class' => $validateClass,
'required' => true,
)
);