diff --git a/src/pretix/control/signals.py b/src/pretix/control/signals.py
index de69691035..abc2fc2d33 100644
--- a/src/pretix/control/signals.py
+++ b/src/pretix/control/signals.py
@@ -36,6 +36,12 @@ on the type of navigation. You should also return an ``active`` key with a boole
 set to ``True``, when this item should be marked as active. The ``request`` object
 will have an attribute ``event``.
 
+You can optionally create sub-items to create hierarchical navigation. There is two
+ways to achieve this: Either you specify a key ``children`` on your top navigation item
+that contains a list of navigation items (as dictionaries), or you specify a ``parent``
+key with the ``url`` value of the designated parent item.
+The latter method also allows you to register navigation items as a sub-item of existing ones.
+
 If you use this, you should read the documentation on :ref:`how to deal with URLs <urlconf>`
 in pretix.
 
@@ -73,6 +79,12 @@ a fontawesome icon name with the key ``icon``, it will  be respected depending
 on the type of navigation. You should also return an ``active`` key with a boolean
 set to ``True``, when this item should be marked as active.
 
+You can optionally create sub-items to create hierarchical navigation. There is two
+ways to achieve this: Either you specify a key ``children`` on your top navigation item
+that contains a list of navigation items (as dictionaries), or you specify a ``parent``
+key with the ``url`` value of the designated parent item.
+The latter method also allows you to register navigation items as a sub-item of existing ones.
+
 If you use this, you should read the documentation on :ref:`how to deal with URLs <urlconf>`
 in pretix.
 
@@ -173,6 +185,12 @@ should contain at least the keys ``label`` and ``url``. You should also return
 an ``active`` key with a boolean set to ``True``, when this item should be marked
 as active.
 
+You can optionally create sub-items to create hierarchical navigation. There is two
+ways to achieve this: Either you specify a key ``children`` on your top navigation item
+that contains a list of navigation items (as dictionaries), or you specify a ``parent``
+key with the ``url`` value of the designated parent item.
+The latter method also allows you to register navigation items as a sub-item of existing ones.
+
 If your linked view should stay in the tab-like context of this page, we recommend
 that you use ``pretix.control.views.organizer.OrganizerDetailViewMixin`` for your view
 and your template inherits from ``pretixcontrol/organizers/base.html``.