The Site Groups feature is only available in the ACM if the correct settings have been made in the Ironpoint.config file.
The following changes are required:
<featureExtension id="SiteGroupManager" enabled="True" isMenu="True" category="Manage" subcategory="Security">
<label>Site Groups</label>
<permissionGroup>SiteGroups</permissionGroup>
<url>/cm/webui/admin/sitegroupmanager.aspx</url>
<description>The Site Groups Manager allows the configuration of system access for a group of sites in the instance. If features are licensed system wide, access to those features can be restricted in the Site Group.</description>
</featureExtension>