+h4. Federated instance
+
+Policy: users from other clusters in the federation are activated, users from outside the federation must be manually approved
+
+<pre>
+auto_setup_new_users: false
+new_users_are_active: false
+auto_activate_users_from: [home1]
+</pre>
+
+# Federated user arrives claiming to be from cluster 'home1'
+# API server authenticates user as being from cluster 'home1'
+# Because 'home1' is in @auto_activate_users_from@ the user is set up and activated.
+# User can immediately start using workbench.
+
+h4. Open instance
+
+Policy: anybody who shows up and signs the agreements is activated.
+
+<pre>
+auto_setup_new_users: true
+new_users_are_active: false
+</pre>
+
+# User is created and auto-setup. At this point, @is_active@ is false, but user has been added to "All users" group.
+# Workbench checks @is_invited@ and finds it is true, because the user is a member of "All users" group.
+# Workbench presents user with list of user agreements, user reads and clicks "sign" for each one.
+# Workbench tries to activate user.
+# User is activated.
+