Although superseded by GenericSetup, this method is still useful and quick to setup. Basically, CMFQI will install actions defined in an xml file called "actions" located in the Extension folder. This behavior is documented in the CMFQI documentation files. An example follows below:

<portal_actions>
  name=Manage group users
  id=userconfig
  action=string:manage_project_users
  condition=member
  permission=View
  category=folder
  visible=1
</portal_actions>