This extension adds the ACLS that allow a contact to only see contacts and groups associated with the domain (by virtue of them being in the domain group - either directly or via a group connected to the same organisation). The domain group is configured through the administration menu within CiviCRM under System Settings/Multisite Settings.
Note that previous versions of the multisite extension made heavy use of Group Nesting. This is no longer recommended for performance reasons. Avoid group nesting where possible.
=== Adding new domains To add new domains use the MultisiteDomain.create api e.g
drush cvapi MultisiteDomain.create debug=1 sequential=1 name="Bobita" is_transactional=0(That is_transactional should not be necessary but I haven't managed to make it unnecessary).
You also need to ensure that the right domain ID is defined - e.g you could put something like this in your civicrm.settings.php
switch ($url) {
case 'http://site1.org':
define( 'CIVICRM_DOMAIN_ID', 1 );
break;
case 'http://site2.org' :
define( 'CIVICRM_DOMAIN_ID', 2 );
break;
case 'http://site3.org':
define( 'CIVICRM_DOMAIN_ID', 4 );
break;
case 'http://site4.org':
define( 'CIVICRM_DOMAIN_ID', 5 );
break;
default:
echo "The world just fell apart";
}