Silverstripe Extension for DataObjects to be editable by other members. You can enable this in Security section

NetwerkstattDataObjectCMSPermissionExtension.php

<?php

class NetwerkstattDataObjectCMSPermissionExtension extends DataExtension implements PermissionProvider {

	/**
	 * Return a map of permission codes to add to the dropdown shown in the Security section of the CMS.
	 * array(
	 *   'VIEW_SITE' => 'View the site',
	 * );
	 */
	public function providePermissions()
	{
		return array(
			'CMS_MANAGE_ITEM' => array('name' => 'Items bearbeiten', 'category' =>  _t('Permissions.CONTENT_CATEGORY')),
			'CMS_DELETE_ITEM' => array('name' => 'Items löschen', 'category' =>  _t('Permissions.CONTENT_CATEGORY'))
		);
	}

	public function canCreate($member = null){
		return Permission::check('CMS_ACCESS_CMSMain', 'any', $member) ||
			Permission::check('CMS_MANAGE_ITEM', 'any', $member);
	}

	public function canView($member = null){
		return  Permission::check('CMS_ACCESS_CMSMain', 'any', $member) ||
			Permission::check('CMS_MANAGE_ITEM', 'any', $member);
	}

	public function canEdit($member = null){
		return  Permission::check('CMS_ACCESS_CMSMain', 'any', $member) ||
			Permission::check('CMS_MANAGE_ITEM', 'any', $member);
	}

	public function canDelete($member = null){
		return  Permission::check('CMS_ACCESS_CMSMain', 'any', $member) ||
			Permission::check('CMS_DELETE_ITEM', 'any', $member);
	}

}