diff --git a/pages/01.administer/12.extend/01.install_unpackaged_app/install_unpackaged_app.md b/pages/01.administer/12.extend/01.install_unpackaged_app/install_unpackaged_app.md
new file mode 100644
index 00000000..6d611b89
--- /dev/null
+++ b/pages/01.administer/12.extend/01.install_unpackaged_app/install_unpackaged_app.md
@@ -0,0 +1,10 @@
+---
+title: Install unpackaged apps
+template: docs
+taxonomy:
+    category: docs
+routes:
+  default: '/install_unpackaged_apps'
+---
+
+!! This page is to be written
diff --git a/pages/01.administer/12.extend/02.configuration_management/configuration_management.md b/pages/01.administer/12.extend/02.configuration_management/configuration_management.md
new file mode 100644
index 00000000..6d611b89
--- /dev/null
+++ b/pages/01.administer/12.extend/02.configuration_management/configuration_management.md
@@ -0,0 +1,10 @@
+---
+title: Install unpackaged apps
+template: docs
+taxonomy:
+    category: docs
+routes:
+  default: '/install_unpackaged_apps'
+---
+
+!! This page is to be written
diff --git a/pages/01.administer/09.tutorials/04.theming/theming.fr.md b/pages/01.administer/12.extend/03.theming/theming.fr.md
similarity index 100%
rename from pages/01.administer/09.tutorials/04.theming/theming.fr.md
rename to pages/01.administer/12.extend/03.theming/theming.fr.md
diff --git a/pages/01.administer/09.tutorials/04.theming/theming.md b/pages/01.administer/12.extend/03.theming/theming.md
similarity index 100%
rename from pages/01.administer/09.tutorials/04.theming/theming.md
rename to pages/01.administer/12.extend/03.theming/theming.md
diff --git a/pages/01.administer/12.extend/04.helpers/helpers.md b/pages/01.administer/12.extend/04.helpers/helpers.md
new file mode 100644
index 00000000..a7cb0340
--- /dev/null
+++ b/pages/01.administer/12.extend/04.helpers/helpers.md
@@ -0,0 +1,5 @@
+---
+title: App helpers
+template: docs
+redirect: '/packaging_apps_helpers'
+---
diff --git a/pages/01.administer/12.extend/05.hooks/hooks.md b/pages/01.administer/12.extend/05.hooks/hooks.md
new file mode 100644
index 00000000..5be0ac0f
--- /dev/null
+++ b/pages/01.administer/12.extend/05.hooks/hooks.md
@@ -0,0 +1,5 @@
+---
+title: Hooks
+template: docs
+redirect: '/packaging_apps_hooks'
+---
diff --git a/pages/01.administer/09.tutorials/12.api/admin_api.fr.md b/pages/01.administer/12.extend/06.api/admin_api.fr.md
similarity index 100%
rename from pages/01.administer/09.tutorials/12.api/admin_api.fr.md
rename to pages/01.administer/12.extend/06.api/admin_api.fr.md
diff --git a/pages/01.administer/09.tutorials/12.api/admin_api.md b/pages/01.administer/12.extend/06.api/admin_api.md
similarity index 100%
rename from pages/01.administer/09.tutorials/12.api/admin_api.md
rename to pages/01.administer/12.extend/06.api/admin_api.md
diff --git a/pages/01.administer/12.extend/extend.md b/pages/01.administer/12.extend/extend.md
new file mode 100644
index 00000000..6a7d9ccc
--- /dev/null
+++ b/pages/01.administer/12.extend/extend.md
@@ -0,0 +1,10 @@
+---
+title: Understand and extend YunoHost
+template: docs
+taxonomy:
+    category: docs
+routes:
+  default: '/extend'
+---
+
+!! This section is to be written